I usually try to get away with taking only 20, and frankly it doesn't work very well. I would bite the bullet and go with 40 since this situation is causing you such anxiety.
I would also wear a panty liner pad, it gives me some peace of mind for some reason even though it probably wouldn't hold a major burst. Sorry, I can't tell if you are a woman or man...but then maybe it doesn't matter really! Immodium, start with one after your morning routine, then take a second if you feel you need to. Try not to take more than you need or that will make you uncomfortable, feeling like you have to go when you cannot.
If you need to stay back from one part of the tour because there won't be any bathrooms available, then just say you are not feeling well and they will figure out how to make it work with the kids, right? You got them there, then take care of yourself.
49 year old female attorney, diagnosed UC/pancolitis 1985, no surgery but much suffering. Asacol/5ASA 6x400 mg maintenance for 20+ years; use prednisone & Rowasa for flares.
August 2008 sought care of naturopathic doctor. Food sensitivity test showed wheat/gluten, other intolerances; eliminated all wheat/gluten from my diet. Probiotics (Ultimate Flora, 50 billion), trying Curamin.
Flaring, seasonal? or supplements too harsh? Back on prednisone, down to 10 mg. Waiting for insurance decison on Humira...