From what I've seen people on here say, they aren't really necessary. If you want to go to some of the popular resort or city walk restaurants though, opentable reservations are recommended. Also, if you stay on site, you get priority seating anyway (?)
8:08pm on 12/18/14 by
Open table is very helpful but no need to reserve tables months in advance
9:13pm on 12/18/14 by
you can go onto opentable about a month in advance and book so you dont worry about going hungry.
12:55pm on 12/19/14 by
At peak times it's a good idea to book through opentable a couple weeks ahead for the best seating times. During off season you can almost always walk up with a short wait.
2:28pm on 12/19/14 by