Well, it is docked at the GF .I'm just not sure what the question is. Is there a special deal when you get a CRT ADR that you get the yacht as well? Something I hadn't known about.
I've never heard of the yacht picking up passengers anywhere but at the Grand Floridian. So you'll have to go there from MK when you are done with your meal.
I'm assuming the OP has the yacht booked for the fireworks and wants to squeeze in a meal at CRT beforehand. There's no special consideration for diners at CRT as far as booking the Grand One.
We have been picked up after dinner at Artist Point and wanted to do the same for our Grand 1 ride next week, but I was told today that they will no longer pick up anywhere but GF.