Hey Clark!! Did you ever make it to Walley World?
Fender skirts are a known and recurring issue. If they aren't cracked, which they probably are, you need to put 8x32 speed nuts on the ends of each screw thru the fender and the skirting. In addition, place some sort of washer under the head of each screw to spread the pressure of the screw head so it won't keep cracking the fender. Tell your dealer you need the fenders attached properly or they will continue to come off. The dealer fabricated a couple of extra brackets to stabilize mine then I made one for each side in addition to those - no more problems.
I have had other issues but not the ones you've described. Remember that the dealer had nothing to do with the construction of the unit so don't start reaming them or you may have difficulty getting things done; the dealer is your interceder with the manufacturer and how your case gets presented, or not, by them will determine your success in getting things done. As a side note; I've dealt with Amy and she wasn't a lot of help - hope you have better luck.