Edit for clarity: I am not eloping with my sister

I was talking to my oldest sister, who knows I'm agnostic, and I brought up that if I want to get married that it's going to be pretty obvious that there won't be a pastor. No pastor I know is going to marry two atheists/agnostics. So my sister told me if I wanted to not make it obvious I should just elope and have a party afterwards, or have a friend do it. I don't really know any friends that would do it but I guess I could find one.

I guess I still like the idea that there's this ceremony and you profess your love in front of your friends and family, even if it's not before God or whatever. Maybe I should just come out to my mom and maybe that would make things easier, but I feel like she'd be really upset. I also feel like she'd be upset if I eloped too though. It's not like my life depends on her wants, but I do care about how my mom feels.

I guess all of this doesn't matter much right now because I'm not engaged yet anyway, but I just wanted to share, maybe hear some advice. I kind of thought it was funny at the time that she suggested eloping but now that I've thought about it, maybe that would be a good idea. It would definitely be cheaper.