They will prob have long waits for the bus back to POFQ. And will have to deal with it. Or they can get a cab from MK.
Leaving at park closing/fireworks any time you have to endure the long waits for busses. I can only imagine the 4th will most likely have even larger crowds. You taking transportation with a baby to TTC wouldn’t help. I don’t believe there is a bus from POFQ to TTC. And they will encounter long waits for monorail or ferry to go to TTC as much as taking the bus to POFQ. Perhaps even longer. POFQ is a small resort so wait would be less. Just wait in the comfort of the room. No sense waking up the baby to go to lobby or the chaos of the TTC.
Are you staying at POFQ too?