Once you're at the door, you'll need to find a series of numbers.
First, note the 4-digit number displayed prominently on the door. The last 2 digits of this number added together = B.
Next, enter and find the cow. Count the pumpkins. The number of pumpkins = A.
On the same cow, count the fish. The number of fish = C.
Now head to the back of the library to the entrance of the Community Room. Note the maximum capacity. Subract 66 from the maximum capacity.
DE = maximum capacity - 66
Put all your numbers together like this: ABC.DE . You now have the exact location you need. Please be discreet - many young muggles present.
Cache available Monday-Friday 10:00AM-8:00PM, Saturday 9:00AM-5:00PM, not available Sundays or Holidays.
Permission has been obtained. Many thanks to those friendly, helpful people who made the location possible!
Congratulations to Marble Guy and Wrongway Junebug for being First To Find!