I do bring my own hairdryer... Actually my husband has one of the few travel-sized (fold up handle) that works as great as a full sized! I do not think the little wall mounted dryers at the resort will put out very much air....
Also, just one other thing that I do not think has been mentioned. I am not sure of the particular order, but the priority, as far as granting requests, like for the newer units, seems to be owners/exchanges, weekly rentals, then at the bottom - skyauction. I have heard that they consider skyauction requests only a few days prior to arrival, where our requests, as exchangers, was considered 2-3 weeks prior.
No matter where (except for a few possible units that might need some renovation) Vistana is a great resort! We loved the Cascades pool!