Girl wants to meet for drinks but... I don't really drink WHAT SHOULD I DO?

You don't HAVE to order alcoholic drinks at a bar, ya know.

But there IS an old sayin:

If you found your wife in a bar, you'll find your wife in a bar

Great saying and so true.
That's the story of me and my ex.
We met in the bar, and for 8 years i tried as hard as i could to get her out of it. She rarely drank at home, but wanted to go to the bar 3 to 4 times a week and get just shitfaced.
That's why she's my ex.
Watch out for those party girls, and be yourself.
Take her to the bar and give her enough rope to hang herself, then you'll know what you have right there.
You will never regret it.