Originally Posted by
guv1976
Note that the LIRR conductor on the Jamaica-Long Beach train may try to collect your combo ticket/Metrocard after punching it. Tell the conductor that you need the Metrocard back.
I'd also ask the conductor to be careful when punching the ticket not to punch through the magnetic strip on the Metrocard portion.
And if you are unable to load value on it for the return trip at a vending machine, go to the manned ticket booth and I'll bet they'll exchange the combo ticket for a fresh Metrocard and waive the fee.