Fascinating!
I, unfortunately, have nothing useful to add to the discussion.
I do have to say that this appears to me to have huge potential. All you'd need to do is get a few big resorts to donate their cooking oil to you, in exchange for some Green Appreciation Sticker and Certificate that you and you alone create and bestow on your partners.
So you have it for free.
Then you teach youngsters how to process it, and give them some diplomas while you are at it. Oh yeah, and the hotel guests can donate to your not-for-profit training foundation. Make sure to seek 501C status in the states, or whatever it si in Canada, so folks can take tax deductions.
Now sell it back to the hotels so they can win some more Green Stars from you. Make sure these resorts mention you on their websites.
I will take a small commission: a pair of fancy sandals, a Brugal, and unlimited biodeisel on my next "consulting" trip down!
Thank you for being you and for taking this in good spirits with which it is intended.
-- Sammy, with suenos of Samana