I agree with Rachel and Kat. With everything included - Villa for week and 1/2, airfare, LC wedding, transportation, extras at LC (hair/make-up/flowers/cake) and photog......We are at $14K. My fiance and I are paying for it ourselves too. The good thing about LC is they have a lot of different packages to choose from depending on your budget.
It all depends on what you're willing to pay for and what you want your guests to pay for. We took on a big expense by paying for everyones rooms, but our wedding is small 12-15 ppl.
Eva with www.photoshootsvallarta.com is really reasonable in prices. Best I found.
I would estimate the actual wedding at LC to cost approx $4500-$4800. That's not including Kelly's tip or the fee for Brad (guy who perfoms ceremony).