Did it today and had to kick other healer they just afk at the start. Made run a lot harder me being only healer. Right at last boss fight another healer joined in progress. Ones leaving think is doing there roulette and not getting one they want so they leave. For moogle tomes can just queue up for the one that gives 10 tomes. Don't know why they run it for the event tomes get them much faster just doing pvp.