Hey HighFlyer,
Always be prepared to go to more than one cabin crew event...at least 10 maybe more until you get one...it's about timing as much as confidence...Depending on which Assessors are looking at you...some like confidence and some like the more conserved...
Some also go of maths more...it just depends on the day...believe me, i've had 9 assessments...girls who you think should have got the job but didnt...I'm not talking about easyjet as i havent been..but each recruiter regardless of airline has their different likes in a candidate...
But yeah just do the best you can... :o)