STH Questions

So I just bought tenth man plan tickets(I know we were mid last year but I think we could make a push this year!). And I had a few questions about them

  1. Am I guaranteed a chance to purchase postseason tickets, or is it only if the other STH don't snatch them all up

  2. How does the exchange program work. I.E. If I have a tier 5 game I want to exchange for a higher tier game

  3. At the end of the season can I upgrade my ST to a better package if I enjoyed the experience

  4. Was this a good investment???

    I appreciate everyones time and hope to see some of you at Fenway this season!