We would like to take our first ever river cruise with our daughter (mid 20’s) and would like her to have her own room. I have a question regarding availability and pricing for 1 person in a cabin either level 2 or level 6. The offices are currently closed (Sunday) and when I try to select 1 person traveling it says not available but the same rooms are available for 2 people. First time river cruise or any cruise for that matter and a little curious how this works? My husband and I would prefer to have our own room and not have her sleep on a pull out couch in the suite level. Thanks for any help!