Hello Ron and Pam,
Looks like there isn't.
ETASA probably has it sewn up tight with the airport authorities and only they are allowed to pick up passengers. Prices are in pesos, so the fare to Ixtapa hotels is about US$ 10.00 by shared shuttle.
This being said, there is probably a local bus service that operates for employees outside the airport departure area, but I can't find anything in that respect.
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