We are planning a trip to Great Britain in March and would love to take advantage of the bargain berths. As I was booking them on line, it asked for payment before giving the assigned berths. I was hesitant since I didn't know if we would be able to share a compartment. My husband and I and 19 year old daughter are travelling together. When you do the bargain berths, do they assign your berths and do they put you together if you'd like? Any info would be appreciated!