Good news, you've protected your laptop (and your business and your customers) by encrypting it. Now, now an encryption key will be needed to access confidential or protected information.
One very important thing to remember is that when you open your encrypted volume with the key, it stays open if your computer goes to sleep. This is a time to understand the between "sleep" and "hibernation". These are similar, but different power settings on your system. If you've relied on "sleep" before when you transport your laptop, this will NOT protect your system because the encryption key won't be needed to resume work. "Hibernation" or a full shut down is required. Test this for yourself to ensure that your information is truly protected!