We always eat at California Grill (it is one of our favorite Signature Restaurants). With that said, we always make an ADR for the first seating which is 5:30pm. At this time, there is not a lot of people up there, and you have a better chance at getting a seat by the window. If you want to see the fireworks from up there, there is no worries, you can get right back up there by showing the downstairs hostesses your receipt from your dinner. This is our favorite time to go because MK is so pretty at Dusk and it is really neat to see all of the attractions going as we eat. Have a great time