have warm kit ready for when you arrive, as the temp is getting a bit cold now, currently feels around low single figures. Some of the wildlife areas have closed down now sea lion island etc. There are some still open for the odd helibid. If you are going to bring a camera and have the choice between a point and shoot or something more technical, bring the more technical camera and experiment.
Depending where you will be accomodated the sure wi-fi hotspots are hit and miss, you get either a 30 min phone card or a 100 min wi-fi. There is area 51 for internet and you will be entitled to 45 min a day, or 30 mins on one of the skype terminals. There can be a bit of a wait at busy times.
The gym and pool are open from early morning 0530 (0600 for pool) until late at night 10 ish. So if that is your thing it is perfect for passing the time.
The old folks home rules have changed recently, you are no longer allowed to wear t-shirts at any time in the mess.
Depending on what mobile phone network you are on in the uk, you might have roaming down here O2 certainly do, 40p a text to send nothing to recieve, calls are just expensive. You could cancel or put your contract on, I didn't and it proved useful when one of my kids broke themselves and the wife ended up in hospital over night with them, I was kept up to date so I wasn't worrying, just because of that it was worth paying andnot using any uk allowance.
I have been down here numerous times, and I have overpacked everytime, I have bought clothes down I haven't worn. At the end of the day if you don't bring something you can shop amazon/cotswolds tax free, and it will usually only take 2 weeks to get down here. I have got away with 2 sets of uniform, 1 pair of boots. At least one set of really smart cloting is essential even as a junior for unit functions in the seniors mess.
Bring your toiletries as they are around 1/3 again more expensive than uk, and limited selection.
If you're bring a laptop for films etc, bring an external drive to keep your collection up to date.
That is all I can remember if you have anything specific PM me.