don't get hung up about age, it's just a number, I was worried the first time I went on one, but the age ranged from early 20's to 80's. Have been on 5 now and was only the youngest on one trip, but it made no difference; as long as you are willing to mix you won't be left out on your own (just look out for the just you luggage tags in the exec lounge and go up and introduce yourself, you'll be made welcome and then you'll know who to look out for when you land at your destination).