We were able to take our teens out to a couple of more "adult" places this past weekend for my husband's birthday. One night we went to a comedy theater, which runs shows rated PG/PG-13. The kids enjoyed the hilarious show and fit in just fine with the mostly adult crowd.
The next day we went out for lunch in a nice but still affordable restaurant. I didn't see many kids there. The lights are lower, there is jazz music playing and I didn't see any high chairs. There are nice goblets on the table and fine steaks served. It was very pleasant to be able to take the kids out for more adult fare.