flying on SK926 on monday (26 Jul) to CPH on an H fare. looks like it's Y0. not sure how the SK booking codes are since i'm used to UA's. two questions. does SK do op ups and how low of a fare code do they do them? second, if a VDB is available, would they push you over to UA? my final destination is BRU, and i'd prefer to not wait until the next day.

thanks!