When you go to a CG, you will not use an adapter. That 30 AMP cord will go straight from the camper to the electric post. All your devices will work, although you may have to take turns running heavy draw items (microwave, AC, water heater).
If you use the adapters, to "adapt" down to 15 AMP, you will trip the breaker, if you try to pull too much juice through the line. I have been able to run my AC from a 15 AMP receptacle (with adapters) in my garage with all other heavy-load items turned off.
For instance, if the DW tries to use a hairdryer while your AC is cooling the trailer, trip. If you leave the water heater on electric and try to turn on the AC, trip. You get the drift, I hope.
These campers are great with all the amenities of home. Just don't try to use them all at once.
