When my wife and I were on our honeymoon, we had an ADR for T-Rex but when we arrived on time, we still had a 30-45 minute wait just because it was dinner time and full. However, the individual at the check-in kiosk told us we could walk up to the bar and order off the menu, so we did! Best decision ever. The bar is centrally located so you can see all of the awesome ambient things going on and if it's just 2 or 3 people, you're not missing much by not getting a table. Plus you get to watch the fish! We ended up going back 2 more times throughout our trip and always went straight to the bar and found seats.