Hi if you don’t want to spend $$$$$ on a plastic bag for the dress to go pee , and you don’t won’t to have 3 people with you ( personally i can’t do it if someone is watching ( except my dog or my fiancé when i take to long in the bathroom and i can’t hold it ) )
one bag from ikea , do a hole 🕳 ( the smaller you can , but you must be able to go up all the way to your hips) and it’s done ✅.