Yes, yes, WIP sucks.. BAD. I was the soon to be bride that tried to work with them for 6 months and ended up ending the contract and loosing money because I was more stressed with them as our WC. Right now I'm trying to decide between Maye C. or Rosy with Lovely Weddings. I just came back from cabo on Friday morning and was suppose to meet with both of them, but here was a mix up and I wasn't able to meet with Rosy so I'm now trying to set something up with her to go over details over the phone before I make my finial decision.
I agree with what everyone else said, if you plan to make your wedding legal in the states instead of Cabo, you can very easily do this on your own and save the money of a WC. That is unless you plan on having a lot of guests then I would recommend a day of coordinator.
Please feel free to ask us questions, we have a lot of great girls on this forum who will make this process a lot easier for you.