Hi [member=27335]vfr400boy[/member].
A neighbour, in my childhood, was a racing pigeon breeder (also tumblers) and I loved joining my grandfather whenever he went over for a chat and a survey of the latest broods. They (the pigeons) all knew where their home was.
However I also remember the release of white fantail “doves” at Charlestown Cornwall for the (long-since) recording of the Onedin Line TV series. There are still a few pure-white fantails to be found at Charlestown dock to this day and my point is that they didn't have the homing gene and didn’t fly “home” afterwards. I guess some customers won't really care whether your pigeons/doves head back home after their event, but my question is whether you are sure all your pigeons/doves have the homing instinct/ability? If they don't then I wouldn't personally be happy to engage peoplespigeons.