I have boooked a trip to Singapore in September, and my brother has since decided to come along as well.
The first booking is through PC at the CP Changi made during the Asia Sales.
The second is at the HI Parkview for a club room made through expedia.
My first question is will it be any hassle to add my brother to these reservations and request a twin room? Also, do PC and expedia have email contacts? I can only find phone numbers on the websites.