with a group that size i would say at least 2 days prior to the day you want, if you are not set on a certain time you might be able to book the day before yes we would use 2 boats tom we only use 3 boats you are talking about another company.
Normally that means youll need two boats. I think they have 4-6boats in total. As early as possible. Depends on how flexible you are.
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