However, it looks like the hotel block is filled on some days and filling on the others. The online site showed most days sold out for either a normal room or a "Regency Club" room from our 5/23rd arrival through our 5/28 departure.
The toll-free number reservation number found a Regency Club room for the 23rd and regular rooms for the remaining nights. But, we have to move on the 24th and I was told we got the last room available in the block for some of the nights.
Running out of rooms in the hotel block is becoming another IAGSDC tradition.