I'm not sure if the title of this question will fit, because more importantly, I'm wondering if somebody else could fill in that person's place without having to pay any extra, since the original person had already paid for it but couldn't make it due to illness or injury, or other unforeseen circumstance.
For example, a friend of mine is going on a cruise, but they didn't know that I would've loved to go, and now they regret not telling me. With a group rate discount, they had to pay $1,900. They could technically add somebody else to their room, but the rooms are tiny, and we prefer to have rooms to ourselves.
If someone ended up having to drop out at the last minute, regardless of what room they had, and if they couldn't get their money back, then shouldn't that money be credited towards someone else who could fill in that space? I would think so, but their travel agent said it didn't work that way, so I would like some clarification on that.
I'm also not sure if I should ask this as a separate question, but is it common nowadays to have visitors accompany cruise travellers to board the ship, wish them bon voyage, and debark before the ship leaves port? I'm not sure if that custom has changed since security has changed over the years. Thanks for any help with this!