Bon voyage. I'm on my ownsome in Gatwick but should see others in Dubai.
At baggage check earlier a woman going to Durban wanted me to put in my luggage some gifts that she did not have room for, perfumes, so could not go in hand luggage. Not a chance. Hope I don't get the seat next to her on either flight!
I use P20 Factor 50. Stayed on fine during the heat of 2013 and didn't wash off. Kept me pasty white and not lobster pink, not even a hint of tan. If it's warm, long sleeves will be uncomfortable and the sun lotion didn't seem to have any effect on temperature.