Maybe what is irksome about this letter is the stated attitude that yeshiva bochrim…EXPECT to be reimbursed. What a chutzpah!!! A yeshiva boy has the opportunity to make his friend happy, to have the mitzvah of mesameach chosson v’kallah, and to get a (lavish) catered meal to boot. And he says “OK, pay me!”
Yeshiva bochur, if your time is so precious, and your financial means are inadequate, and you can’t make it, then wish the chosson a mazal tov and stay in the beis medrash. No harm done. Otherwise, go to the wedding without a reimbursement form in your back pocket. Trust me, none of the regular guests ask to pe paid for the pleasure of going to a wedding.