We are relatively new to more frequent travel, and new last year to Flyertalk, so this story is more like a small hiccup, but it did give me a laugh afterwards. We had gotten our one of our first First Class upgrades, LAX to HNL, and as we were dropped off at the curb at the LAX terminal, I said to DH - let's check our luggage with the Skycap so we don't have to stand in long lines etc.
Did so, paid the fee and the tip, then walked in the terminal to the First Class check in desk (for the first time), and found out that line is very short and of course that we can check our luggage at that counter, with assistance. Ah well, just one of the many "oh, now I know how to do it" times that we have learned from.