I did not have an outdoor kitchen in my "have to's" when scoping out our new fifth wheel, but the one we found had one, so I took it.
I will NEVER be able to have another RV without an outdoor kitchen. We use it all the time. Ours has a refrigerator, about 30" tall, two large cabinets, a small sink with hot/cold water and two electrical plugs. DH's coffee pot resides there along with our grill accessories and oven mitts. I installed cup hooks to hang them from under the cabinet. We have a one-burner butane burner that also resides there until we set up camp. We have the grill that swings around from the bumper of the fifth wheel. Neither of these are located under the awning and we have not had a problem with it, at least, so far.
The refrigerator is used for all of our drinks, sodas, waters, etc. Our food stuffs are kept inside the RV due to animal activity in many of the places that we camp. It is opened in the morning and closed before we go to bed or if we leave the campground.
The cabinets contain paper plates, cups, bowls, etc. along with plastic silverware, salt/pepper grinders and other prep equipment.