Can you sell on holidays at haven bought through the paper?

[Plantlover]

Have one at he end of September that I don't want to go on.

Can I sell it?

What did Haven say when you asked them?

Don't be tempted to let somebody go in your name. If they cause damage you will be liable.

I haven't asked haven because I didn't buy through them.

Hadn't thought of the damage issue. Maybe I'll just have to lose the money.