Does this mean that I will not have the option to buy single photos of our family on the rides after I get home? Thinking I may just want one or two of these and that it would be more cost effective for me to buy them as singles than to buy MM.
That is correct. You won't be able to see any ride photos on your account unless you have a MM linked to your account. The only option you have to purchase the ride photos is at the counter right after the ride, and those are only available for 24 hours if you would decide later that you want it.

