We use them all the time. They are fairly nice units. Gas. Take a minute to start sometimes if they haven't been fired up recently.
All the tools you will need can be requested and they will bring them to your room. In a One, Two, or Three Bedroom, the utensils are usually already in the kitchen. Sometimes not so we request them. In a Studio you will need to call down to get them. Make sure you request a grill brush along with everything else.
The only thing special I would take is a lighter. Sometimes that is just easier than messing with the spark generator.
If you are planning on using them - which you should - run down when you first get there and start them up. Just to make sure they are in good working order. If they are not, they do get fixed fast if you make it known.
We have never planned on using them and gotten shut out. We usually take everything down and eat right there at the tables. There is more traffic through that area these days, but still pretty quiet and nice to eat outside.