Back in the days when I used to drink, alot, I could go into a bar and start drinking, beer, and I would wait a 2 to 3 hours before I would go, and after that maybe every few beers, go again.
I had to comfortable with a bathroom before I would use it, and when I was younger I never wanted to use public restrooms, I'm OK with it now, if it's private or no one is around.