i had a "friend" who pushed me into the girls bathroom during high school in the main hallway so a lot of people saw it. the girls in the bathroom didn't seem to concerned about it. i believe one made the comment "a little lost, are we?" and one of my teachers who saw it happen thought of me as a pervert from then on. (i WAS pushed, but that seem to matter).
on the other hand, when i used to work the "graveyard shift" at a hotel, i would always use the womens' restroom because it was so much cleaner and hardly anyone ever checked into the hotel around 3 a.m. so i never got caught. good luck with your decision.