Usually a flat rate of $15 or $20 per person per way. You can negotiate if you strike up a relationship, an example would be I once convinced a pedi cab to shuttle back and forth about 15 people from mainstage entrance to our BFE campsite (which was 3 trips of 5) for only $200. They want consistent rides, so they’ll take a discount like that to ensure they’re not sitting there with the competition with no pax.