That seems high for mariachis - I am getting married at the Royal in PDC and it's only $550 for a mariachi trio for 45 minutes, which is still expensive but way better than at yours! The biggest place I'd recommend saving $ is with flowers if your resort is like mine. Their flowers are more than double what I found at a reputable shop in town, which also delivers for free, and if I meet them right out front of the resort, I avoid the outside vendor fee. Also, I skipped floral centerpieces and am doing lanterns as it gets dark in Mexico so early in January (when I am getting married), so no one would see them anyway, and am doing starfish boutonnieres instead of flowers which will die quickly in the heat. I also did DIY starfish and raffia chair/aisle decor instead of flowers, but you can buy them on etsy for cheap too. I imagine I have saved more than $2000 by using an outside florist for bouquets and aisle petals, and by skipping flowers elsewhere. Besides, in paradise, you don't need them so much - the decor is built in for you! You can also save on your invitations by skipping all the inserts/gazillion envelopes, etc. I got mine on Etsy, LOVED them, and they were about $175 for 75 plus extra envelopes all in. The RSVP was a postcard that was perforated from the invite, so it eliminated an insert and an RSVP envelope. I have seen so many that are $4+ an invite with everything. I think for a destination wedding, you can so get a way from some of the formalities that can drive up the price, and at the same time, achieve a fun vibe! Finally, if you're not super religious and just doing a symbolic ceremony, you can look into having a friend certified to do your ceremony. I have read that is it's someone in your party, you usually don't have to pay an outside vendor fee, and at my resort, that would equal $600 in savings on an officient. Hope that helps a little - good luck!