Italy has streets that go up and down and can be difficult to navigate however if he is independent and with your help, you should be able to work your way around.
Europe does not have all the laws that force companies to provide services for disabled I'm afraid and with the fact everything is very old you need to plan out your travels.
Celebrity Constellation - March 17 followed by Celebrity Reflection - March 22
44 cruises - too many to list however cruiselines are in no particular order:
and some unknown tub
Yes, I'm a Royal Chump and proud of it.