Are there any other perks to a CL room other than the free foods and drinks?
Yes. You get a couple of small perks like nightly turn down, and a collection of DVD's you can borrow. You also get a slightly higher level of service. It's hard to put into words exactly what that level of service is. The extra service is variable depending on the personality of the staff and what your needs are. At the most basic, they book ADR's for you if you ask. Perhaps little more. If you have a problem, they may not be able to do anything, or they may simply know who to call (a huge time saver), or they may save the day! It's quite variable, but usually they are helpful.
Once we lost a purse. The CL knew exactly who to call. Getting the purse back quickly saved our day. Who knows what would have happened otherwise. It could have been a disaster.
Typically if you use Magic Express, CL staff will greet you at the bus at most resorts. They escort you to the CL floor for check-in at the CL desk. You don't have to stand in any lines!
At most resorts, the club level area is room key access only. With kids and a big family, that's nice. Sometimes though it's a little akward if strangers on anohte floor are in the same elevator.
I've stayed CL in BC, BWK, AKL, CR (boththe 12 and 14th floors), Poly, GF (sugarloaf) GF has two club levels: the Royal Pacific CLub is in the main building, while sugarloaf, or outer club, is the SF building. CR a has two club levels: the 12th floor Atrium club, but the 14th floor Tower Club is being renovated Jan through summer 2013. The ones I haven't tried are YC, WL, and CSR business CL.
It's hard to rate them. Much depends on personal preference and the staff. Having stayed at one resort several times, even individual staff has good/bad days.
Still another aspect is the building itself. Your room might be a few feet from the desk, or a healthy walk from the lounge. Close to the pool, or far away. Obvioulsy, that's going to impact your experience. The Lounge at Poly has a magnificent view of the caslte, but it is large. The food is above average, but I found the staff to be very impersonal. Part of that is simply the lounge building set up, but maybe it was just luck of the draw.
One of my personal favorites is the Beach Club. The lounge itself doesn't have a great view, but it's intimate (some say, "too small"). The food is quite good, and both stays we had super nice staff.
Hmmm...all are good. They all have pros and cons. GF had great food, but no view, and it's the most pricey. CR has a great view, but the resort theming is dull, medium food. My AKL stay was a while ago, so it's probably not fair to say too much, except the lounge view is fun.