No tips really just be sensible. I flew to the Maldives (10hrs) last wear when I was 32 weeks and I wore Flight socks, drank lots of water and got up regulary for little walks. Just be sensible in the sun (Your skin is more sensitive when pregnant so you can burn easier) and I kept my tummy covered with a damp towel as baby used to kick like made if I sat in the sun.
Thanks! I have purchased flight socks and intend on having loads of water. Will def need to walk around as I'm majourly uncomfy anyway. And my tummy never sees daylight anyway! Lol so I have a maternity tankini for swimming!