Yes, you are able to pause your subscription at any time. This is ideal for times when you may have too much coffee on your hands or are perhaps going away for a while.
Log into your RAVE account and click on the 'Manage Subscription' link.
You will see the option to 'Pause Subscription' where it shows Subscription Status.
Once you are ready to start up your deliveries again, just log back and 'Resume Subscription'.