Originally Posted by
jsloan
For a 1K, the only disadvantages of Light fares are that they can't be upgraded and that you can't change them at all -- they're "use it or lose it." Non-status, non-credit-cardmembers get a first bag charge, but that wouldn't apply to you.
A warning: the disclaimer states the first bag charge is waived based on premier status or card
when checking in on UA/UAX metal only. So if first flight of any direction is on a partner, be wary about when checking in with them. i just did a dummy booking to FRA with the outbound starting on UA and the return starting with an AC flight. The checked bag tool, even when I changed it to note the price for a 1K, indicates no fee for checked bags on the outbound, and $60 for the first bag on the return. I didn’t actually finish the booking, of course, but I would fully expect to be charged on check in for the return.