I still get a small warm feeling when I show the RCC people my CRC card! It's like old times - at least for a minute.
On RCC vs CRC - it's important to note that CRC has free drinks - at RCC you have to pay (unless your Int'l F or J, then they give you a coupon for one free drink on the ground). If you're a drinker and you've got a 3 hour connection, it can be a big plus!
On the snacks - I prefer the CRC snacks (I miss the M&Ms in the mix!). But I think RCC has more variety.