I naturally succeeded in reaching full clear, but royal duties (falling asleep) tore me away while I was in the middle of replaying routes in the last hour for Gacha Medals. Unlike LF cards, which are just as useless after the fact, the Gacha Medals instantly disappeared from my Gift Box after the event's conclusion.
If I could have kept my eyes open for a while longer and spun those items, I would have had a little more Cruz to fall back on, not that I need my inheritance to survive.