We have taken eight or so large ship ocean cruises and this was just as good OR BETTER than any. Food was much better! The service and organization was MUCH better! It could be as slow paced and leisurely as you desire; or it could be cities, tours and excursion packed.
Europe in general and the cities were not really handicapped friendly as there were many cobblestone streets and small steps. As we were two 45 year old guys, we had no trouble at all.