Input requested re: trip to Italy and cruise

I'm 72 with bronchiectasis for over 15 years, colonized with pseudomonas. I've thankfully been able to keep infections at bay for the past three years with nebulized antibiotics and following NJH protocols. Next week, we are traveling to Italy to celebrate our 50th anniversary. Four of the nights we will be staying in an Airbnb that has a saltwater pool. My son's family (3 teenagers) will be using the pool a lot. After that we will be going on a nine-night Mediterranean cruise. At one port, my son has rented a boat.

Two questions: One, would you be comfortable sitting by the outside pool, dangling your feet into the water while the teens splash around or would you sit farther away from the pool? Two, I am not taking a bathing suit because I do not plan on swimming in the sea. I've read Dr. Falkinham's opinion that saltwater pools are safer than fresh water and that oceans don't have the NTM risk as lakes. Am I being too conservative to not take a swimsuit? I'd like to create some great family memories, I just don't want to bring back a lung infection when I return home.

I realize that I am in an incredible position to have this opportunity. It's once in a lifetime trip. I want to be wise but not fearful. Thanks for your input!