Well, we did it. The party was a success and is now over.
The patio heaters were a huge hit. We bought 2 at Costco on Monday night because we wanted to keep the party on the back patio if possible, but it's been a little chilly lately (OK, chilly for California). With their help we were able to keep the back patio warm enough. I was still running around at around 9pm getting ready and getting something for Bobby and I to eat, but few people show up that early anyway.
Bobby and his friends played a few songs for us, and then Steve took over and did an awesome job as our DJ. As for the Casino part: we sold a stack of chips for $5, and at the end of the night, the person with the most chips got to take the money home (we hosts were exempt). The craps table and blackjack were the big hits. I rolled at the craps table for what seemed like 30 minutes or so, and the house had to restock with chips 3 times during my run. Too bad I haven't had such luck in Vegas... yet anyway.
The party finally started winding down after 2am, and the last of our guests just went home. I'm exhausted, and tomorrow is going to be another long day...