Here are a couple of web sites that may be of interest to the OP as they specifically addresses part of his question. The second site is for Tommy Thopmson park and it specifically states that drones are not allowed...
I had the same issue Seems like this remote has easily cracked antenna Contacted Dji Remote was 5 years old always treated carefully Dji said ship it to repair 2 week’s later I received a New One in the box Cost of $80 shipped.. Have heard of...
Did this happen at the same time your antenna broke?
Just glue it back on, and don't pack it so tightly that you rub buttons off and break antennas. LOL!