nothing wrong with puns, it is clearly miserable day here today.
I like the idea of saying what you've said. 'we've been together ages and are lucky enough to have all we need. Please no gifts - if you wish to mark the occasion, please donate to a charity of your choice'.
Why can't people just buy actual nice presents? I'd be thrilled to have nice gifts, things that people who know and love us thought it'd be nice to buy us , but I accept I'm unusual and have been waiting for 15 years for a fecking weddi g