Made reservations to go up tallest building in world which, of course, is in Dubai,
Without reservations it's hit or miss.

We stayed at Grand Hyatt executive floor - very nice. Several restaurants available with varied cuisines and prices in the hotel. If you're on executive floor limo takes you to airport free - but most flights are late, make a deal with desk so you can check out late.

BEWARE - do not get into a "cab" without a meter! (anywhere)

We bought 2-day HOHO pass, which also includes boat trip - we thought it was worth it.