I remember them modifying the deal to include 2 passes for the studio rooms, not sure when, but it was early on.
Just looked back to the July 1992 edition of "Vacation Magic" and in the Q&A it says :
Q - As a new member of the Disney Vacation Club the only problem I have is with the number of tickets a family receives through the Park Admission Plan. My family consists of six members. Four tickets for the Parks do not accomodate our family.
A - In the first few months of operation, we received many requests to enhance the Park Admission Program. Members told us that our original allocation of passes wasn't adequate to meet their needs. We reviewed the program and based on comments from members, determined what allocation of passes would meet the needs of the majority of our members, most times they visited. As a result, in January we enhanced the Park Admission Plan to provide even more park passes. The re-allocation was as follows:
Studio --- original plan 1 pass ---- new plan 2 passes
1 Bedroom --- original plan 2 passes ---- new plan 2 passes
2 bedroom ---- original plan 3 passes ---- new plan 4 passes
Grand Villa --- original plan 4 passes ---- new plan 6 passes