I say, always feed a hungry baby. Kiss of death for sleeping - No, if she is hungry and you don't feed her, she is just going to keep waking up LOL. The key would be to increase her day intake as best you can. Could be a growth spurt - if she is 8m Ill assume you're giving solids... have you increased them? Has anything been different before she began waking? I would try to figure out what you can do during the day to increase her intake - you wouldn't want this night feeding to become something she expects all the time. If its a growth spurt, it should subside.
Are you still giving a DF, if so, could be time to stop.
Prolly not much help, but that's all I got lol. Have a nice trip and good luck.