I'm of the opinion that this is a very dated "problem". If in the years since these places began offering Mass, a person has not been there even once, the likelihood of them going at any point is very low. If you go for years without Mass, you probably don't have the means to travel to the closest location. We travel periodically to the nearest chapel with regular Mass times, and so we're on that chapel's email list. We'll know if there are going to be Confirmations, etc. because we get their bulletin each week. Unless you're saying the problem is that these places don't have email lists...