@gsk2

Hope your surgery goes well. I had a robotic sigmoid colectomy with no ostomy. Most of the resources I found on line, covered diet exercise and pain management, but glossed over the bowel management changes.

I didn’t travel for long periods at first, but if I did, I would plan bathroom breaks, keep up on your pain meds and bring food. Your plan sounds reasonable, just make sure your rest stops include bathrooms.

For me, bowel movements were frequent for several weeks, 4 to 6 times a day on average. Also, my abdomen was pumped with gas, which takes time for your body to release. I was bloated and gassy for a few weeks. I would plan on bathroom breaks and carry baby wipes. GasX helped some. Loose fitting clothes are helpful.
You should look at diet ideas as well. Most sites suggest eating a BRATs diet at first, to allow you system to adjust. You may want to pack bananas, applesauce, yogurt, white rice, jello for the trip.
This link has good info on bowel function: https://mtnviewsurgical.com/life-after-colon-surgery/