I think I "get it now." You were asked to volunteer to shoot a charity event. The event was to obviously make money for some worthy cause. You thought you would take this opportunity to sell your pictures and from which donate some portion of your proceeds to the charity. My wife and I have been asked to volunteer our time and services for a worthy cause this coming weekend. If more photographers show up than us, we just get to leave early. If someone wants to buy a 4x6 all the money goes to the charity. The cost of the 4x6 is ours. The time for the photography is also our donation. Hopefully we get some follow up business from the event, but that's it. We'll be there from 1PM until about 7PM. The temps should be around 40 degrees or colder. It might snow. I think "I get it now." Your idea of volunteering is different from mine.

I'm going to side with the charity on this one, and suggest you apologize to them for the whole sordid mixup.

If you are going to volunteer, then do so. Take the pictures, send them in, and be satisfied with doing a good deed for a charity.

I don't get why you are so concerned with the "designated photographer" concept. Did they say you were? Does that mean no one else's pictures can be shown? You are upset that the other photographer is selling the pictures. Apparently he did not "donate" his time to the event.

If you take time to process pictures, you can expect that other's pictures will be up on social media before you get yours done. These days, the pictures could be showing up before the event is over. Either your processed pictures are so much better, or you need to speed it up.

At any rate, you may have ruined your chances to shoot this event in the future; but it sounds like you don't care. Not clear why you "volunteered" in the first place. Money? Advertising? Sounds like they put up a link to your pictures even after you took time getting them out while complaining about another photographer. And one they have a long standing relationship with. Not a good showing, as far as I see.

Here's the deal. The way you left it, you left the impression that you are "difficult" to work with. They might not want you back. They might not give you a good review to other clients.

Don't mix personal affront with business; it is not likely to do any good and more likely to do harm.

Hi R--
I do a lot of charity work. From homeless, first responders, women's resource center, Austistic school's and charities (I have an autistic grandson) Sporting events that raise cash for fireman and parks in DE.
That said. Get over it. You are right. But best to enjoy your work and giving time to volunteers.
I am the official producer/videographer for a number of big charity sports events. Triathlons, marathons etc. When doing them many stringers trying to sell personal photo's and other shooters including friends competitors are shooting all the time. At the finish lines they get in the way. My technique and personality is to make friends with them. Thank them. encourage their work. The clients love my productions and support me.
Having produced corporate events, videos and marketing with my production companies I owned over the years problems were solved with a friendly, open, leave my ego at the door.