The "handicap" rooms rock!!! If I could get one every time, we wouldn't need to book suites. I'll leave it to the market forces to guide Royal as to how many rooms of various types they need on their ships.
Walking: try early morning stairs and floors walking
Music Hall is sometimes good. (But did they change this to something else??)
Solarium- Do it - Be it!
Asking the wait staff about allergies is nice, but one needs to go up the chain of command prior to eating at a restaurant. The wait staff's knowledge of the ingredients contained in a dish may not be complete.