Did you get a package deal with your hotel res?
Bus tour is a must do first thing if you haven't been in a while.
Skyfari ride is nice to take a break from walking.
We went two weekends ago and it wasn't too crowded.
It was just right temp wise too as we've been there when it's been a lot hotter, which isn't much fun.
There is a lot of construction going on now so the bus tour will give you a good idea of where you'll want to go.
Have fun!