OhioMike2016

I have cruised before but because my wife now has mobility issues, I have the following questions (just starting to look into my options): 1) since accessible rooms are so limited per ship, how far in advance must one book? 2) which cruise line has the best accessible room options (not just the room but the entire ship being accessible)? 3) does it cost more for this type of room? 4) are deals available for these types of rooms? 5) do any of these rooms have a balcony option?