Hi! You already know what happened with mine.
Just be proactive and make sure that if the day of forecast calls for rain that you talk it out with the coordinator before hand. Unfortunately my coordinator was no where to be found the morning of our wedding and never even advised us that there was rain in the forecast. They asked us to make the decision to move inside after it already started raining and all of our rented decor items were setup outside. Which means they got wet. They refused to move in the majority of our items and did not give us a refund for the items that were not used at our reception even though no one asked if we wanted to move everything inside at all or even informed us of the forecast.
I hope you have beautiful weather and that everything goes according to plan but don't let it get to you too much if your plans change. I did and it totally ruined my day. Just take a few shots (if you drink) to ease the nerves and enjoy the company of your husband, friends and family.
Totally agree if your planner is nowhere to be found have someone find her. Be proactive and voice your opinion on locations and things because ultimately you brought all this business there and you want the best experience and they should give you the best experience. I'm grateful my planner was there for everything but I'm not sure how Moon Palace works so make sure when you have your first meeting with your planner that you get her number and ask her to be at all events.