Sorry.
This sucks so bad.
I wanted to run off to Vegas and get married. My hubby's parents would have thrown a fit, so we had a quick to-do at my mom's house. Our neighbor is a judge so he married us. I wanted to do it outdoors in the morning. (we were leaving for New Orleans that day) VERY informal.
Even with SO few details I was incredibly surprised how rude and pushy everyone was. "Why don't we do it inside, it's cold" "Where is the food? You didn't have food?" Not to mention how pissed they probably were that it wasn't at a church with a preacher.
My advice is to tell them all to kiss your ass and do what you want! This is YOUR day, the only people who matter on your wedding day are you and your husband.