Eloping

Hey, so my boyfriend and I are eloping in June. Probably the 13th or 14th. We've been planning this for a while and are both really excited but wanted some advice. We decided to get married because we will both be  military (me active, him ROTC and reserves) starting later in the summer and would like to be married before we ship out. His mom is against him getting married before he's at least 23 and got upset with him when he mentioned it not too long ago. So we decided eloping would be best, telling as few people as possible. We already have witnesses set up (people we would trust with our lives and secrets like this.) and everything but the certificate. (where he lives it can be a same day process) We even have an officiate ready. It helps that his best friend is a pastor. We plan on having a reception in a year or two when we tell everyone and I'm keeping my last name for now. Anyway, I was just wondering who else has eloped and what the results were from that. What would you do differently? How did your family react?