That's not a lot of info to go on. What size is the breaker in the park that's tripping? What size breaker are you tripping in your camper? What is the voltage at your main breaker with your air conditioner off? What is the voltage when the AC is on?
There are a number of things that can cause this. Low voltage will cause your electrical items to draw more current in order to consume the number of watts that they need to operate. This additional current could exceed the amp rating of the breaker. Low voltage is often a problem in the extremes of hot or cold weather because so many air conditioners or heaters are running and exceeding the capacity of the park electrical system.
Another issue is bad connections and this issue is compounded when larger amounts of current are drawn. A poor connection causes resistance which drops part of the voltage at that point. To compensate for the voltage drop, your camper pulls more current. More current heats the poor connection which increases the resistance and the voltage drop. If this condition is allowed to continue, it will eventually trip a breaker or burn up the poor connection. Arcing of the connection when you plug in your camper or disconnect it with appliances , heaters, etc turned on, causes those poor connections at the park power pole. After people do this hundreds of times, the receptacle is ruined and ripe for ruining someone's weekend.
If your camper power plug is hot and it feels loose in the park receptacle, I'd ask the park maintenance folks to check it out.
The combination of heat from a bad connection and the extra current can trip breakers.
A camper bounces and vibrates down the road and you could have loose connections in your breaker box. Unplug your camper, remove the cover from your breaker box and check the screws on your breakers to ensure they are all tight.
Hope this helps. If you have any more questions, let us know.