I did an 11lb Prime rib while camping. I trussed the beef n seasoned it with salt, pepper, garlic, Rosemary. I rubbed it with butter and applied the seasonings. I got a fire going and set my rotisserie on my tripod. I set the tripod on the side for an offset cook. I let it go for 2.5 hrs. Pulled it at 125deg. Let it rest for 10-15 min. For the side we rubbed oil on some sweet potatoes and wrapped em in foil and threw em in the coals. My wife even toasted some marshmallows for a topping on the potatoes. Everything was perfect!
Also a "Miami Vice" 1/2 Strawberry daiquiri, 1/2 pina colada