I walk with a cane. Going slowly, with rests, and carrying about 15 pounds, I can plod along for an absolute maximum of 45 minutes before I simply must sit or lie down for a good half hour or so. I pack fairly light (one overhead roller bag or backpack and one underseat bag are more than enough for me, and I mean bags that meet the rather small Norwegian Airlines standards) except I also need to carry one extra tote bag of medical and health-related stuff . Are the Rick Steves "Best of Scandinavia" and "Sweden" tours practical for me? Could I rent a portable scooter in Stockholm to help me keep up with the group? Is it ever necessary to walk more than 3 blocks all together in a group? (I'm happy to leave the hotel early to walk to a bus etc, or to straggle along and arrive late at a hotel or restaurant as long as it's no inconvenience to other people.)
I wish so much that I'd traveled more when I was young and fit. My message to all: DON'T WAIT!