Jan, Thanks for the offer. I already contacted one of Fred's guides, and I think we're set, though we haven't worked out any details yet because he was busy last week.
We are not boarding the Mariner until Lima after a 5-day trip to Machu Picchu. Also, as I mentioned at the outset, our plane doesn't depart Rio until 10:30 PM, so I think it would have been complicated to "combine forces."
Again, thanks for the offer. See you on the ship.
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Eugene