The Renaissance is good. Keep in mind that the hotel has different inventory than what is displayed on the Marriott website. You may try calling them directly.

Also, I've seen booked hotels release a few rooms on Sunday nights, so it might be worth checking back for availability.

The Suites in Garden Grove is a good option, and has had a ton of kids when I've been there. I typically drove elsewhere for dinner, but did cave in for the nearby Outback one evening.

At breakfast, the wait staff must see a ton of golds/plats/packages - as it was assumed that I would not be charged for breakfast - on 4 different stays.