Of the 4 in anaheim (dolphins, gardenwalk, peacock, & grand), none are in II, they're only in RCI. Grand isn't available for trading yet and you'll have to have a VERY good trader to get it. The other three are easier to get, especially if you go in the off season, but they still need a pretty good trader. Have them check their account, if they can see anything in anaheim for the next 2 years, then they have enough trade power, if not, you won't be able to get into any of them.
We own at Dolphin and love it. I've also stayed at Peacock, but its more like a motel since it just has a mini fridge/microwave. I hear gardenwalk is nice, but units aren't as large as Dolphin.