Hi Kristin,
first of all congratulation on your wedding :-)
I made my wedding with Carribean Blue Wedding (Playa del Carmen Caribbean Blue Weddings Home Page)
We had a really small wedding, just us, our parents and our friends, together it was 8 people. We had a civil ceremony with a Mexican Judge, but they also organize: catholic, non denominational, spiritual, even cosmic or mayan ceremony :-) Our ceremony was set up at the beautiful semi-private beach where there were no people. We contact with them only through the mail, they gave us a cellphone numbers also, but from Poland mail was cheaper. I have to say that we had no problem, cooperation was perfect. Girls were really patient and they always respond very quickly for my mails and answer for my questions. They are really professional. We didn't have to worry about anything, all paper work did CBW, they made an appointment for the blood tests, they ordered a guitar trio, videographer etc. Photographer we found by ourselves but they had one if you want. Our work together based on pics, they sent us pictures of arch, set up of the beach, my bridal's bouquet so that we could chose whatever we liked and it turned out to be totaly the same like at the pics. We had a guitar trio instead of Mariachi. We didnt have a reception, just a dinner but we wanted to have it in the beachfront restaurant so they found it for us. We stayed in Maramao restaurant. Lovely, small restaurant near the 5th avenida. I know that they organize reception there. For dinner for 8 people and all drinks (also alcohol) we paid $400.
Three days before the wedding we had a meeting with CBW where I was given a schedule of the wedding day: time of my hairdresser, time when the van will be for us at the hotel etc. All cost of my wedding was $3600.