Is it possible to leave 'Ohana during the meal to quickly see the pageant and then come back to finish the meal? It's been years since we've eaten there, so I really don't remember the set-up or location of the restaurant in relation to the beach. That way, you could maybe have the appetizer and entree, see the pageant, and come back for dessert. I don't know if they permit this. In that case, you should definitely request a table by the window. Tell them that you are willing to wait for it, just as long as you are there in time for the water pageant. Otherwise, I really don't think you can compeltely finish your meal in time to get down to the beach for the pageant without rushing things. 7:50 isn't necessarily the time you will be seated. Hopefully, you will be seated by 8:00. Even then, I don't see you being able to finish the whole meal in an hour (I don't think we've ever been in and out of a WDW restaurant in an hour).