Thanks, everyone, for this terrific information. It is so great to have the perspectives of those who have been there and done it. Have also been considering the underwater walk/aqua safari and the walk with Mark Eddowes sounds very good too! Everything sounds great...so hard to choose...

The good news is that it sounds like there are few bad choices. I think I've already decided we will need to return in order to see and do what we miss the first time...

Silvernt - thanks for the info, look forward to seeing your trip report. Welcome aboard!

Thanks again, I really appreciate the very informative responses.

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Dena