We have eaten there 2 times before, and please above poster do not take offense but this is not correct about eating downstairs.
Yes you can make ADR's there, and there are actually 3 types of dinning offered at Wolf Gang's.
There is the Wolf Gang Express which is counter service, serving pizza's sandwiches and such. You cannot make ADR's for this.
Then there is the Wolf Gang Cafe, located on the main floor, we had our most expensive dinner ever at WDW there in Nov. 03, we had the Silver Plan and it was included on our list of eating establishments. We both had appetizers, main course (great steak) and we were so full, we took our desserts back to POR for later. While we were eating, I saw a plate which looked interesting carried by our waitress and asked what was it, it was a huge whole lobster, served to look like a white pineapple and broiled on top. She said you can order one too, its allowed on the plan, so we did, the bill for just the lobster was $75.00 so our meal total was over $200. for the night. It was delicious by the way.
Now the other place Wolf Gang offers is the more private "Upstairs" dinning room, I believe prices start around $75. each, last time I looked and it was not offered on the plan.
So there are 3 choices for you and the main Cafe is offered as 1 TS if you are on the meal plan. Great choice if you are over there for the evening or to see Cirq!
Enjoy, we did:
Carol