Sanpancholife.com is a great resource for transportation needs. Follow the website for a variety of options. San Pancho is the closest town to Lo De Marcos where the wedding is and we highly recommend staying in San Pancho instead of Sayulita to cut down on your travel time to the venue.
Another option for your transportation needs. They have great reviews on Sayulitalife.com and a website you can check out. Their direct email for a transportation quote is: info@sayulitaluxurytransportation.com
The owner, Tino, is quick to respond. He has a variety of vehicles for your transportation needs. There are additional options on Sayulitalife.com, but we picked this one because it has great reviews and communication has been easy.
We have never personally rented a vehicle from Gecko, but this is what the locals recommend. They don't have hidden fees like other companies and their quotes include insurance. In Mexico, you have to use their insurance. It's not optional like it is in the US. Please keep this in mind if you go with another company like Almo, Enterprise, etc. and avoid pre-paying for insurance until you get to the rental counter.