Raspberry iced tea is delicious! What a great choice! It's life affirming, has no after effects except a very pleasant aftertaste.
You might want to go tell the bartender you don't drink, and ask him to make you a "special". If you can, tell him some of your story, enough to make him raise his eyebrows. (Or hers.) You'll likely find plenty of support, they've probably dealt with lots of ornery, abusive, pukey drunks, and they're glad you won't be one of them
If that fails, and you're in trouble, go find a movie theatre. Your sobriety is worth it.