When I was a participant years ago with a jet ski club that made an annual trip down the Michigan shoreline and collected donations for the leader Dogs school near Detroit. Every year we had both types of shirts available. T’s and Polo’s
That way people had a couple choices. Don’t know how much of a problem it would be to offer that being it is a special year. I’m still the Concert T-shirt kinda guy.
And possibly a sublimation process would make a better print?