URComped’s cruise offers are for double occupancy cabin categories, so if you qualify for a comp cabin and you're traveling solo, there is no surcharge. You would still pay the full port fees and taxes for the double occupancy cabin which are required to secure the cabin. In case you plan to add a guest later on, it's recommended to add their name for a second guest while booking in case the ship reaches the mandated limit. If you plan to find another adult guest, anyone can be picked, and the name can be swapped later.