My own experience with wings for parties is that whole ends up with too much waste. (but the parties I have had when making them had younger eaters for the most part)
With the pieces, when they took a bite and realized they were full, there was still another piece (from the original wing) for the next person. With the whole wings, that one bite and done led to more waste.
Again, older eaters might not be a problem.
Also, I don't own a UDS so if its easier to do whole, maybe leave them. Or pick up a few cooking screens, then you can lift out whole trays at a time and the pieces will not be a problem.
Good luck with you cooking gig!
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