Secret Elopement - who to tell?

My FH and I just got engaged a few weeks ago and are eloping in two months for several reasons. We want a small, intimate ceremony, I'm not getting along with most of my family, and we're trying to save money to start a family soon. We're keeping it a secret from our families, because we know they'll want to intervene and show up uninvited. But I feel like it might be ok to tell most of our friends, as long as they don't post on social media about it. I'm wondering if it would be easier for them to take it as a surprise after it happens, or if they would prefer to know in advance, even though they're not invited?