In Reply to: Yes but posted by Holladaze on Thursday, 13. April 2006 at 14:03 Bali Time:
If you're on a package holiday and booked a twin or double room...your friend has lost what he/she paid.
If you've booked a twin or double room privately and wish to change it to a single when you arrive it would be upto the hotel....and depend if you've paid for two people in advance..
you've been vague in the circumstance you've given