If you are sitting your APC in Session 1, 2013 then you will need to make sure you have the Final Assessment dates and locations firmly recorded in your diary…
See the www.APCcentre.com , click on quick-links and list item 7.2 will take you to the page on the RICS web site to download all of the assessment dates.
Try and avoid going away on holidays etc before your assessment date as you will probably need one afterwards.
Also go and see your chosen assessment venue prior to the assessment to familiarise yourself with it. It is all about reducing the little stresses.