No, they do not count toward your membership. Sorry.
It seems better to ask this question from the staff, not on Local Guides. A person with proper authority can only answer such questions. I got the feeling that maybe you planned to return the unused tickets and get a membership. However, if you mean by buying let's say, 20 tickets you will be awarded with a membership, that seems completely and obviously impossible and that would violate the whole point of membership.
As Graig S said, I do not think that you can use these tickets to complete a membership. But it is a very good idea to have an MFA membership, especially when one has a family. Your visits ay MFA as a member will become definitely cheaper.
No. The tickets do not count towards a membership purchase.
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