Yes you can buy them as infrequent you want. There are 3 steps to an AP: purchase, activation, and first use. Purchase is when you buy them (phone, online, in person), activation is when you activate the pass for use by verifying that all requirements have been met by the intended user, and finally first use is when you use an entitlement of the AP. Date of First Use is when the expiration date will be set (366 days later). So in short you could do exactly what you asked.Can I purchase passes one per month for budgetary reasons and then activate them later all at once. Also, if we buy gold initially, could we upgrade to platinum later on.