Is a plated dinner possible with the Mexican rsvp (or lack thereof) culture?

Is a plated dinner possible with the Mexican rsvp (or lack thereof) culture? Itzel, today at 2:49 PM Posted in Account Support Reply My fiancé and I just got engaged. We're all over the place in terms of what we want to do. We've talked eloping and also talked big wedding. We both come from very large, tight-knit families which means narrowing down which aunts/uncles to invite is impossible. We're probably looking at 300 or so just with our families. His family is form the U.S. and my family is a mix of first and second generation Mexican immigrants. Mexican weddings are very different in a few ways. One of my biggest concerns in having a large wedding is that if I'm going to go through all that planning, I want it to be spectacular and 'my way' so to speak. One of my 'musts' is a plated dinner where everyone is sat and eats dinner at the same time... obviously this requires RSVPs with everyone showing up to the ceremony on time the moving on to the cocktail hour and then dinner. The problem is... every Mexican wedding I've been to with my family, extended family and friends doesn't move that way. I don't know if it's just our circle or this is common with Mexican weddings. Basically you can expect 20% of your guests to show up to your ceremony at church, there's no cocktail hour, then your guests trickle in over the next couple of hours and your caterer serves them dinner as they arrive. No one RSVPs and even worse, they'll bring a plus one or a couple friends because it's so casual like that... Have any Mexican brides successfully gotten their side of the family to RSVP on time, respectfully show up on time, and not bring uninvited guests? All of my American friends think this is completely bizarre but my Mexican friends understand... lol My fiancé is ok with having guests trickle in like that but I just think it's so disrespectful and it's bothered me ever since I was a little girl! Any advice??