I've had no problems getting 2 beds. I usually wait about a week after I win the bid and then call the hotel directly (few instances where it was a few days before my bid was on the hotel system??). One location said i had to wait until check-in and it still wasn't a problem. I just had a winning priceline bid for the Westin Harbor Castle in TO for $136.00 CDN ($165.00 cdn tax total) for August 27th - using PRICELINE Name My Price.
Good Luck!