definitely take all your gear - slider board, vest, helmet, gloves. though, they do have decent hire gear, and a pro shop if you need to buy anything.
They do have a boat lake with an xstar, which is great!
when we were there, they didn't have motorbikes, but that might be new - they are making improvements all the time. they do have scooters you can hire though, to ride around the complex.
there's also the seistec 'winch' park, which is lots of fun - but also the scariest thing i've done on a board - knowing you have to time your ollie right to make it down a 2m concrete drop off into the next pool - scarey!! they have a lot of different pools open now though, so there are less scarey options
accommodation - we stayed in the villas which are the most expensive option. they are pretty nice, and it was handy having a little enclosed yard, cos we could hang our gear around the place to dry.
however, this time we will probably stay in the cabanas or the wood cabins. both are cheaper, and also a bit closer to the actual cable. I'd probably ask for one of the ones closest to the cable when you book.
there isn't really a cable/accommodation combo deal, but everything is so cheap anyway that it doesn't really matter. just get your cable pass once you get there.
$/day is hard to say - do you want me to include accom, cable and food? basically all up it isn't much... plan on a very cheap holiday!