Using a gas grill is a perfectly good option, Ellen. Sear your meats at home, pack as your normally do and then preheat your grill on arrival.
Listen now to Chef Cary’s instructions on preparing your prime rib in two different locations. It should work out very well.
Please do not hesitate to give us a call at 1-800-977-1224 to discuss this or other cooking techniques.
PS. The estimated cook time on location is 30 minutes.
PPS. Here is a link to a great Prime Rib with Cabernet Au Jus recipe.