It's a tough situation BraveGirl. He doesn't want to change so he doesn't want you to change either.
Unfortunately you sound like you KNOW you need to change.
If heading to the pool is going to cause you to drink - DON'T DO IT!!!
You can do this. This is my drinking time too. Instead of heading upstairs and fighting the urges, I popped in here.
Just get through tonight - don't worry about tomorrow. Great support here.