Like Honeyb says - Sun screen, mozzy deterrent, and anti bacterial stuff.
Also, stuff to;
- soothe sun burn
- calm stomach upsets
- anti histamines
- rehydration salts/ solutions
- plasters
The thing is not to worry, it's civilised there and you will be with friends.
If you get delayed on the way over, see if you can get a hotel room where you can relax and shower without
fretting about your bags. Airports often have transit type hotels. Take a watch or alarm clock so you know you will wake when needed.
Might be worth requesting a wheelchair for your dad - ok he may be able to walk but there can be an awfully long way to walk in some of these airports. Also, if anything goes wrong with flight timings then the airlines do then help to get things sorted out.
The main thing is to enjoy it!
Remember to take lots to read.
