Hey Blyth..
Thats abit weird the analyst should of posted a reply to you, but anyway, here is a link to UTS dates
http://www.handbook.uts.edu.au/dates.html
Ok, so main UAC rounds are on the
17th January 08 @ 9pm,
YOUR enrollment will be during
4th -21st February 08. Your faculty will have their designated days which you will have to come in to do all the stuff you need to do. They may have a process for prospective students such as you who may be away. You will need to call up SAU since the service desk couldn't be bothered to answer your question. Also your orientation day for new undergraduates beings on the
11th - 22nd of February 08, however this is not compulsory. I didn't go and I'm fine.
So my advice to you is, unless you really must go on this vacation - go either earlier and come back earlier or don't go if you don't want to miss the enrollment (there may be another way?)
Also refer to this site
http://www.newstudents.uts.edu.au/ its where you will have to go once you have been offered placement!
Hope this helps.