Hi Anna,
I'm only a newbie at kegging, but heres my thinking on it...
You CAN bottle takeaways from a keg, instead of using a party keg, and its quite easy.
I will post some pics of my little setup when I find a way to get them onto photobucket, (every time I try I stuff it up).
So you dont have to take your keg with you, AND - There is no no sediment, AND - if you like you can go the next step and filter your beer.
My bottling setup is 2 Metres of 5mm plastic hose (LHBS), a keg gas connector(LHBS), a rubber bung with a 6mm hole in it that fits / seals inside bottle necks (LHBS), a 1/4" brass mini ball valve (Hardware shop), 2 x brass hose tails with 1/4" thread for ball valve to connect to plastic hose.
I bought a small party keg / party tap etc for take away beer, but have never used it, I just bottle up now if I'm heading out.
If you would like some pics of the setup, just PM me with your email address.
(I got the idea from a video clip on utube).
When you read these forums about kegging, you can get all wound up worrying about pressures etc, its as simple as changing the pressure up / down a bit to suit whatever level you want it carbonated. If you just started at say 10 psi (70 Kpa), you would learn quickly and adjust from there, its just not that technical, and there are some really nice advantages with kegging.
I pulled the tap apart when it was new as well, just to see how it works, its all simple.
When I am planning to bottle, I just drop the pressure in the keg down to about 4 psi the day before (adjust regulator down and pull valve on top of keg releases pressure), and also turn the fridge down as cold as possible, usually 1 degree.
Then when bottling I drop the pressure to about 2 psi, and can get the bottles filled to within about 30mm of the top, without losing foam etc.
It takes about 30-40 seconds to fill a 750ml king brown (tallie).
I use brown Pet bottles, and after about 5 minutes in the esky on ice, when you open a bottle you get a good little burst of pressure.
Anyway, I hope all this info from everyone is helping you, you'll like using kegs if you give it a go.
Cheers,
Chris