Here is the situation.
Rail from London to Leicester on Oct. 12
Rail from Leicester to York on Oct. 14/15
Rail from York to Leicester on Oct. 15
Rail from Leicester to London on October 16
8 Day pass - ~$300.00
Tickets pre-bought - ~$216.00 (but my dates are set then)
Purchase at the station - No Idea
from people who have taken the train before what is the best case in my situation?