I'm a retired vet, and I go on PGR rides. I tend to agree with you. On the other hand, I can see taking advantage of the gathering to sell PGR stuff but at the right time. For example, during flag line would not be too good. Did they actually sell on the flag line or in plain view of the family and guests? It needs to be discrete. It could be done before or after the flag line and cemetery, or out of the main view, so PG riders can buy stuff during breaks. The rally point before hand would be the very best place like you said if they rally. If everything is done discretely, then no harm no foul, and I wouldn't get bent out of shape about it.