We were an all adult group, so I may not be able to help much.
We had Tier 1 seating as well. Yes, during the dancing it did get a bit mental and I had several parents bump into me. But I expect that at a good Barbecue, no big deal. If you are the parent chasing the kid you probably feel different.
If you expect California Grill food level or Steakhouse 55 or something like that: you are in the wrong place. Good barbecue food: welcome home.
I haven't done HDDR yet (it was a coin toss between HDDR and BBQ, and character crazed me wasn't going to miss the characters), but I thought the show was really great.
Character interaction was top notch. I thought the premium for tier 1 was well worth it. When the first rush of famiies was through I had the chipmunks and Goofy for myself for almost 10 minutes.