A movie theater will have plenty of food for almost a month so you will not have to search for food; only other supplies, weapons and ammunition.
A selected number of movies will provide entertainment. However, unless you can lower the volume, it is not recommended to watch movies if there are zombies in the area due to most, if not all, movies being played at a very high volume level.
A movie theater with its own building will have access to the roof for an extra escape route so long as you have something to safely glide down to the surface.
A movie theater will have a number of entrances and exits, making it hard to barricade the building.
A movie played at a high volume will attract zombies within hearing range.
Survivors may have already looted the theater of all food.