We recently stayed in the DLH and they had really great offerings for their CL, I'm sure GCH is probably close to the same. It is very worth it to us, even though we didn't take full advantage of the club level food (too many other yummy/favorite restaurants to eat at while at Disney haha) we found it to be worth the cost of the room just for the great service.
There were a lot more items offered than I'm listing here, sometimes different each night but I'm drawing a blank on some of it. These are served throughout the day at different times, some are exclusively breakfast/midday meal/dinner/dessert items:
- malibu coconut shrimp
- potstickers
- smoked salmon on toasted bread
- asparagus/feta cheese crumble app
- fruit
- deviled eggs
- mickey waffles
- sesame chicken skewers
- chicken quesadillas
- crudite tray with different vegetables
- different types of breads, meats, and cheeses
- chia pudding with berries for toppings (raspberry, blackberry, blueberry, strawberry)
- yogurt with the same toppings and granola
- homemade chips and salsa, salsa verde
- homemade potato chips (barbecue flavored when we were there) with some type of dip
- mimosas
- beer, wine, etc (not a beer or big wine person, so not sure about the offerings)
- unlimited cans of soda (diet coke, coke zero, cocacola, sprite, seagrams), tomato juice, apple juice, etc
- small Italian and French pastries, donut holes, cookies, chips
- prepackaged peanut butter and jelly sandwhiches, granola bars
- M&M's, trailmix, fish crackers