Yep, I love having liquor then weed. One time I was so fucked up because I had gotten really drunk and then really stoned a bit later that my friends didn't want me to have any more weed because they thought I would just be gone. But I took several hits anyway.
The problem with smoking before drinking is that you get the munchies. And eating a lot and then drinking is not a great idea. If you can resist the munchies, however, I guess it's fine.