I bought my plane ticket yesterday, but I held off on the hotel room so I could get the better rate that Amazon had negotiated with the hotels.
Stupid me; I should have registered immediately. I just got off the phone with Marriott, and the base rate for a hotel room at the Marina del Rey Marriott is now $270. Amazon knocked that down to $250, a minor discount. The thing is, yesterday the price was $200 for the same room. (And if I want to stay Friday night, the cost is suddenly down to $200 again.)
Yes, Marriott jacked the price up by $70 overnight. I'm getting screwed on the price, and I'm calling out Marriott for price-gouging.
Now, I'm still going to pay it, but I'm also sharing this as a learning experience. If you can, register before the hotel knows about an event. That way they won't have a chance to jack up the price.
Update: My Amazon contact gave me a direct link with the correct discount code. Now I'm only being gouged out of an extra $30.