Sunburn? If I have 3 days off at home I have a sunbed on day one. That way i'm less likely to burn. Also I find that once abroad by the pool I do 30 mins on sunbed, followed by 30 mins in shaded swim up bar, then alternate, works!!
Emirates or any airline which advertises itself with attractive crew in perfect lipstick, they value their image..... I would suggest a light foundation, translucent powder, blusher, then a dusting of bronzer to blend it all. Neutral eyeshadow, mascara, minimal eyeliner if needed (no falsies, you'll be too concious of them). Lipstick, whatever shade you normally wear day to day, or a subtle gloss. Get your hair tied back, and straggly bits either pin or spray back.
Melting make up? Try a good salon and grab some testers for Guinot or Matis products. Both do oil control gel/ creams, etc.
Make sure your lunchtime ciabatta isnt stuch in your teeth too!!