Welcome to the forums and happy RVing!
The earlier poster is correct. RVs typically have one or more furnaces that run off propane (and need 12v battery power as well). Other things that may run off propane include the fridge, the water heater, the cooktop and perhaps the oven.
The fridge will typically also run on AC if available. Some water heaters can run off either propane or electric. Some units have a microwave/convection oven that would require AC.
So, you kind of need to know how you plan to cook and understand how the rig will be equipped and whether you will have a generator or access to power. For example, will you have a drip or perk type coffee maker? Will you need power to use the oven?
It's a learning experience and even if your first trip does not go perfect you will likely survive to RV another day!