Just back from the 16 night Celebrity Flora Galapagos / Machu Picchu 16 night trip.  Here's a few notes and some packing tips.   We were on the 16 night package.  Note if you book cruise only and not a package - transportation, charter flight, park entry, other flights, etc may not be included.  Also - this was for Flora, so some things may be different on the other 2 ships.   We left a day early for the trip (which officially started on a Saturday with a tour of Quito).