Below is the link that shares all of the activities to choose from here at JKR, and the cost associated with it.

For schools that have more travel time, it is probable that you will only have time for 3 activities.  I would have your 5th grade  team lead find out when buses can leave and when they have to be back. Most districts are able to arrive around 9:30 and need to leave by 1:30 so the buses can be back to run their afternoon routes. If this is also the case for Cambridge- let's plan for 3 activities. 

Here is the link:
https://johnknoxranch.org/schoolprograms