My Fiance and I are both vegetarians, and have been for many many years (me since I was a little child), and because most of our close friends are also vegetarians or at least openminded eaters, we've never had any sort of issues with dinner parties and whatnot. The issue we run into is with our extended families, and that most of them can't imagine a meal without meat.
We were planning on serving some vegetarian dishes at the wedding that were "normal" and we thought the majority of guests would enjoy - these include a veggie lasagna, sage sweet potato gnocci, white bean salad, kale and pepita salad, and of course rolls and butter. However, we've been getting some flack for not serving meat. I'm very uncomfortable putting any money towards the purchase of meat, and my parents are equally on my side, and since we're the ones paying for it, we're not serving it.
So my question is this: is this rude? No one will die without meat for one meal, and we probably have 20 other vegetarians invited as well. We're paying a lot to ensure maximum deliciousness of the food that will be served, and the tastings have been awesome.
EDIT: Removed section about RD! I think it got blown waaaay out of proportion. Has nothing to do with my FMIL, she is awesome and being super generous. I just wanted to know what was appropriate socially in order to make sure people get fed if there are minimal veggie-friendly options.
I'm more concerned about the guests at the wedding being happy and full on veggie food. 
Is this ridiculous and everyone just needs to chill out? Am I being ridiculous and everyone else is normal? Could use some perspective here. Thanks!