CRT, Hoop De Doo, Spirit of Aloha (the luau at the Poly), and Mickey's Backyard BBQ are all pre-paid events. When booking without an appropriate dining plan, they will be charged the full price at the time of booking.
Akershus and California grill are credit card guarantees. When booking, you will supply a CC number but NOT be charged unless you either don't show up or try to cancel too close to the meal (usually 48 hrs before the reservation). The fee for not showing up is nominal ($10-$15 per person).
When using an appropriate dining plan (that is to say, not QSDP), the prepaid meals switch to the CC Guarantee. You'll still have to input your CC number, but it *shouldn't* be charged unless you don't show up or cancel after the cutoff time. These will charge you FULL price if you don't show up, compared to CG and Akershus which will charge roughly the fees listed above.
As a note, even if part of your party shows up, these fees are typically charged to the card on file for each of the people who did not show up.
The online system has always been wonky when it comes to the prepaid on
DDP events. Sometimes it works, others, no so much. If it's showing you a total amount of something other than $0 when you book online, you can either pay now and get refunded at dining time or call the dining line and book over the phone.