You'll need to check-in and then they will want to try to take your photo so they can sell it to you inside.
At 5:00 pm they will promptly ring the dinner bell and open the doors. You have an assigned table and they start with salad and drink orders. So, basically if you are there by 5:10 you'll be able to be seated before the show starts. Much better if you are there on time, but stragglers are still being seated at 5:10 (based on my experience having attended 3 shows).
You'll love it ... enjoy!
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We arrived a MCO at 3:30 pm, got a rental car, made a 30 minute grocery stop, checked in at Pop, 30 minutes in room, MK bus, ferry to FW - arrived at FW by 6:30 pm in plenty of time for the 7:15 show.