PV: vallarta-adventures

I see the disclaimers on their site, anyone book directly with vallarta-adventures?

Since they are a cruise-ship contracted company, they aren't allowed to let you book directly. Of course, you can always lie. ;)

We always do the two-tank scuba excursion with them in Puerto Vallarta because it's a big party boat. We're doing it again in July, and will be my fifth time with them.

Vallarta adventures will not accept direct bookings from cruise passengers

You may not be able to book direct but check with your cruise line to see if they price match. I may or may not have just booked this as an excursion and found that Vallarta-Adventures offered it at a lesser price... and may or may not have gotten an onboard credit for 110% of the difference ;)