Agree with everyone else - when someone complains to you about their problems, you should listen and/or offer solutions to their problem, not talk about whether you have those same problems. For Suzy's issue with Veronica's elaborate demands, I'd suggest just telling her "Our budget is $x. If yu want to eat at Chez Fancy, we can only invite five people, not seventy. Ice sculptures are not in the budget." and then stick to it - treat "budget" as a new mantra.
Also, in general (ie not just in this situation) I think you should avoid humble-bragging about how low key your wedding is. Haven't you told us you plan on a very fancy dress code for the guests and a spotlight (literally) on yourself? Those are perfectly fine choices to make, but people may very well conclude that your own wedding is onerous on the guests or has over the top attention-seeking elements. So bragging about your low key wedding would just make you look silly to people who feel that way. It's great that you feel pride about how youre planning your wedding, just keep that pride between you and your husband.