librajaco - congrats on your upcoming DW!!!
We were married in Cuba, 2005 and this is what we did, for what it’s worth…
Prior to planning the details of our DW, we already knew, that my father would be throwing us a reception upon our return home, nothing super fancy, just a great party. Anyway, what we did was send our actual invites for our DW, just to let everyone now of our plans, and it also stated there would be a reception once we were home, there were reply cards included so if anyone did want to attend our DW, they were more than welcome.
We too were a little unsure if this was the correct way to do things, but it seemed to go over just fine. There were quite a few people whom we didn’t think would attend, but actually did!!!
Just prior to us leaving for Cuba we sent out the formal invites to the reception, and received most replies before we left, and it was really nice to see all the well wishes for the actual wedding, I was quite overwhelmed!!