Does anybody has a solution for reservation dates? I have not find any, however it must be possible somehow with rules and actions, as Emre said here: A few ‘quick’ questions:
There is now a Pre Order designation for Ticket Type. Using this with Ticket Tags and some expressions using Dates can possibly get this to work.
There has not been a tutorial written yet. Hopefully someone with the time will contribute. Until this happens I recommend you studying Rules/Actions/Expressions and anything pertaining to SambaPOS and how it works as this will give you a higher knowledge point to start building your own solution.