Our Challenger had all three of things you are asking about.
Fireplace - got used quite a bit on chilly mornings and evenings. Eliminated the need to take along an electric heater for those times when heat was required but the furnace was too much. Also, had the ability to turn off the heating element so you had the ambiance but without the heat.
Outdoor kitchen - used every trip. I converted a Weber Q 2000 to use the on-board LP. The mini fridge was good for keeping drinks cold and the sink good for cleaning cooking utensils outside.
Exterior TV was nice to watch the news outdoors while dining.
Our current rig is without the outdoor kitchen and fireplace and we miss both.
Happy hunting and safe travels.
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054