My 70-year-old mom is preparing to go on an eight-day adventure with the luxurious, all-suite Regent Seven Seas Cruises . As a travel and fashion writer, I wanted to offer her some of my expert advice from all of the years I’ve spent traveling for work.  My guide to packing for a cruise includes clothing and travel accessories for the various activities she’ll experience, from the spa to excursions at the ports to fine dining on board. Supportive sandals and slip-on sneakers are important for her to be safe and feel secure on this trip. In addition, I also told her to pack lightweight layers , luggage trackers , and a crossbody bag to fit her daily essentials. Keep reading to see the cruise essentials my mom is packing, all available at Amazon.…