Originally Posted by SEA1K4EVR

Correct to both. Flights to Canada count for RCC access but not for IFL usage or drink chits.

At LGA UA departs from the C gates and both CO and AC depart from the A gates but they are all in the central terminal. The RCC at LGA is one of the few that is actually located outside security so it'll be easy for you to use the RCC and then head to the A gate security checkpoint for your AC flight. I don't believe there is a PC at LGA.