First off, you guys rock! This forum is an outstanding source of information!

Question on booking via internet: I have submitted several requests for car rental and other excursions but have had almost no response. Is it standard practice? Is it the season? Do I keep trying with the same or try another company?

Here is an example
Scooby Doo

Says there is no availability ever, does not respond when I contact them, but if I look at Trip Advisor, there are ratings from July/August.

Any insight would be appreciated!