Since I couldn't find this info offhand, and I'm techically not listed as a vendor (although I'll be selling at the DP booth), I thought I'd post it HERE.
They charge $5 per 15 pounds to receive at the Riviera, plus $3/day after the 3rd day. Address it as follows:
Riviera Hotel and Casino
c/o Business Center
Your Name Here - Your Cell Phone Here - CGExpo
2901 Las Vegas Blvd S.
Las Vegas, NV 89109
I'm a mailing today and Monday. I hope I'm not too late!
John, if I'm off by a bit, please PM/post!
ian