If you have been using the tool for about 2 years everyday then you will be fine. My only caution is the questions are very specific. So build a few workflows with unions, dedups, intersections, and anything else you can do to prep. The wording is very specific so try to remember every click and the sequence of screens you go through to build an enrichment ect...
 
Also the sample exam is a good place to start
https://sei.caveon.com/launchpad/ad4-e314-campaign-classic-business-practitioner-certified-expert-sa...