My daughter is graduating high school so we booked a Greek Islands cruise on Jewel of the Seas, June 23 - June 30, 2019. This is our first time to Europe and my mother in law (who has never flown or been out of the Southeast US) is also going with us on this girls trip. What are the must sees and do's? We'd like a nice mix of historical sites, beaches and landscape sightseeing - without paying a fortune. At this rate, our flight may be more expensive than the cruise. ? Any other tips or tricks? Any must do's on the cruise ship? Thanks yall! 3