How to deal with catheter while recovering after prostate surgery?

I would say that you shouldn't need a nurse. You'll be laid up recovery for a minimum of 5 days, more like the full ten days that the catheter is in you. You'll walk around your house, etc., but you won't be going to work or driving (based on my experience). I had the single incision DaVinci robotic assisted method RP, and I felt assaulted and pummeled below my navel. I had no "ability" (forget "desire") to move around too much.
I found the smaller leg-strapped bag unnecessary and annoying. If you are forced to go out in public, perhaps an early return to work, then yes, you'll need that bag. It was annoying because I had to remember to check it/empty it every one to two hours (they fill fast). And...you feel the weight of it increasing as it fills hanging off your leg.
I was fortunate in that I am retired, so I just laid and walked around my house with the larger bag. The larger bag should have a plastic "hanger" hook device. I hung it off the side of my bed at night on my bed frame. I am not an active sleeper, so I never felt a tug or had issues. The inflated balloon inside your bladder will prevent the catheter from falling out or being pulled out. In terms of emptying the catheter, or changing back and forth between the smaller one, you just need to have an organized bathroom counter top: I'd have two alcohol prep packs already open and laying on top of the pouch they came in. I'd have the catheter to be swapped for, out and ready. I would stand over the toilet and open the stop-cock with the one I had connected, let it drain to empty, and then shut the stock-cock. Then I'd walk to my bathroom counter, pull the tip connector out to remove the now-empty catheter, and then use the readied alcohol prep pack pad to swab and connect the other one. Once I decided to use only the larger catheter bag, I still cleaned the tip once daily. And...
One extra bit of advice: When the nurse assistant pulled and removed my catheter after 11 days (a momentary big ouch), she wanted to leave the VERY STICKY ~3" x 4" adhesive pad that secured the catheter tubing from my penis to my thigh. She said that they "find that the patient does a better job removing it at their pace than they can." I learned why when I went home. The adhesive on that pad is like epoxy or Gorilla glue. I gently, slowly started to peel that adhesive pad off my inner left thigh. It was a struggle. It was very painful, and it took a lot of skin with it. I now have a permanent, very visible red scar about 1" x 1/2" in one area where it just would not peel off. I had to more assertively pull, and it took a lot of skin with it. Good luck.

Thank you @surftohealth88 . I will check it out.

Thanks Soli ! I will look them up ASAP :).
Just now I found this one, the first one I found that uses a real person (not a dummy) demonstrating bags and draining.
I will try to find the rest that you suggested - thanks :)))

There is a lot of good information about cathether care on Youtube from reputable medical institutions. One is from John Hopkins Urology called Cathether Care for Men. It has excellent tips on cleaning the tube ends, cleaning and lubricating the tip of the penis etc. There is aother good video I have viewed a couple of time by Cone Health. It is entitled "Robotc Prostatectomy Video Series #4 : Cathether care. Some of the nurse's advice has to be adapted to a situation where the patient is doing the cleaning instead of someone helping the patient.

Thanks for the info about different kinds of stat locks 🙂 and about alcohol and for lidocaine tip !

Thanks for the details and for the info about minor incontinence :), that is very encouraging to hear.

Thanks everybody for extra info < 3 ! : )))

My shopping list is getting nicely put together now :).

Retiredguy - I like the idea of using gloves and alcohol for tube and bag cleaning , I was planning to do that myself. I work with disposable gloves in kitchen also, ahahahaa, "professional deformation" XP , ha ha ha, once you work with microbes there is "no way back" ;). That is why I was so surprised that hygienic part of taking care of tubing and bags was rarely mentioned. I understand that a hospital gives instructions on the day of discharge but at that point most patients are dazed with all things that happened to them and I am certain that tube cleaning is the last thing that they will remember in detail or will have energy to study first day at home.

I am so glad that I found out about it in advance and that I have this wonderful forum with even more wonderful people who are always eager to help and know so much about everything. < 3

@soli & @surftohealth88 -- Frankly, at 1 year since surgery I didn't remember much about cleaning the bag. My wife says we definitely followed the hospital instructions for swapping bags and cleaning the used bag and hanging it up to dry. Also, she said that was something she took care of for me, so maybe that's why I don't remember it very well. She didn't remember exactly what she used to clean it but she said the hospital team gave good instructions and gave us a kit. But my wife added using disposable gloves and disinfectant wipes for a bit of extra sterilization. She also made the comment that cleaning the bag was something a patient might need help with since it's a little more physical than just swapping bags, especially during the first few days after surgery. She particularly mentioned that the kit contained a catheter tubing clamp that was useful when swapping bags. I think by "adhesive stat lock" they mean the device to support the tubing so the bag tubing doesn't pull on the catheter. If so, there are 2 types: adhesive or elastic. The kit the hospital gave us had an elastic one and I think the hospital staff threw in an extra. The elastic strap worked real well, but I did notice it tended to slide down during the day so I had to adjust the tension and generally keep an eye on it to make sure it hadn't slid down. But it did work well. Best wishes.

Good instruction was given along with a couple of Depends at catheter removal. I purchased Depends prior to that and only used 1. I didn't need much absorption. I ended up using various women's pads/liners.
Foley bag info given at time of hospital discharge.

Hospital sent me home with an extra stat lock. However, I bought from Amazon a Velcro stat lock instead of the hospital provided glue one. I used isopropyl alcohol to clean the bag (externally) and I did not swap out bags and alcohol wipes to clean the Foley catheter that connects to the bag. Used lidocaine on the tip to avoid any uneasy feeling where catheter came out of the body. These all worked well for me. I drank a lot of water every day (like four 20 oz glass of water) until catheter came out.