Unlike some it seems, I actually enjoy RSD, I get there early, usually around 4am, meet the same hardy souls who are there every year, never see them any other time of the year, (for the record, mostly men but not all). Stand and chat rubbish about all sorts of music for 4 hours and then spend too much money, go to McDonalds for breakfast and then drive home.
I have a good relationship with the store so have already sent them a list of what I'd like, said shop will order in everything on my list, there have been occasions where they wouldn't have ordered a copy if I hadn't asked. I'm not guaranteed to get it if I get there late but the others in the queue in the 1st 10+people will have done the same. As such it's usually okay and I get everything I'm after. They can also order in US releases if they have enough warning and your prepared to pay silly money for the import. I've done both where I've got US release, but also where I'd got the price and said no, don't order for me.
Where I am becoming more disillusioned as the years go on is what the actual releases are. I used to enjoy random live albums like the REM Bingo Hand Job release a few years ago, or records never released on vinyl as it was from when no-one was releasing vinyl. However, you now get a release that's in a different colour vinyl. Probably 3 releases on the list this year from bands I like that I would normally try and get but as I already have it as a black LP, as such I have no desire to pay an inflated price to get it again as it is an identical release except the vinyl colour or a picture disc.