I was told that if there's more than 1 bathroom to designate one for bride only.
I was told to have your bridal party to help you out, the lady at the wedding shop told me to just put the dress over my shoulder. Someone else said take the dress off depending how easy it is to get in and out of.
So I am putting a sign up saying bridal party only and designating that washroom to us since there's 3 washrooms and have all my bridal party on pee duty.
Omg don't take your dress off each time! I would get like your maid of honor to go with you when you need to go to the washroom. Pull the dress up and go to the bathroom the opposite way facing the toilet. I had a fit and flare and it worked perfectly
If I am understanding the style correctly, I believe my best friend wore a similar style dress and she told me I was going to be her pee buddy to help with the dress, but the first time she went to the bathroom, she was able to manage it on her own, i believe she was able to just bring it up over her hips.
obviously I dont know how your dress will fit you, maybe try some options with your seamstress? like see if you can pull it up yourself?