I presume Trump/Mar-a-Lago would charge them for that, so wouldn't you say it's more of a nonpartisan action to not hold events that enrich a sitting President?
Something tells me Trump did solicit them host anything there, and certainly didn't solicit them to virtue signal by wanting to host there, then at a later date provided best opitics. Release a scatheing shitstorm and pull out of said event they never were seriously considering hosting there in the first place.
Trump obviously didn't, but what exactly do you think part of the marketing team's job is at Mar-a-Lago? And charities should never opt to hold events there, but I don't recall you screaming about any organizations who do so being partisan. In your bizarro world view, that only apparently applies when they DON'T hold events there.
Too many phony charities spring up every time we have a disaster. Just send your donations to the Red Cross and the Salvation Army, and you will be fine.
I don't think any charity has any business hosting an event at a ritzy place like Trump's hotel playground! That money is supposed to go for people in need, not executives in need of sweet hotel rooms and fancy entertainment! Don't contribute to those funds BECAUSE they even considered hosting events there!
https://www.samaritanspurse.org/