Eeyore#1fan
Congratulations on your up coming Anniversary, and for the reservations @ The Chefs Table at V&A.
I think that since you both will have nice clothing on and the heat that we have here in Florida during July, I wouldn't even think about making your wife ride a bus or boat over to the Grand Floridian. To make the night special I would check on the price to hire a Limo for the ride over, I would at the least take a taxi. Trust me on this one.
By taking a taxi over to the GF you wouldn't have to leave as early, the travel time between the resorts would be less than 10 minutes.
You should notify Kids Nite Out of your reservation time or the time you will be leaving the Lodge and have them sugguest an arrive time.
Beckie