Quote Originally Posted by KokoHarts View Post
spending them in grails sounds like a smart decision for most people
Its not.
-You'll gain some skill enhancement material from event (seems to come with Ixion event in ~1 month)
-You'll also gain draconic shard from event (seems to come with Matisma(?) event in ~4 month, 2 shards per event)
-2 eyes ticket is SR or higher kamihime weapon, which means that you can in theory get a SSR with it, and no Eidolon or crappy weapon, only kamihime (ssr ticket isnt kamihime guaranteed though)

Enhancement material and draconic shard seems to be related to Ragnarok difficulty. Info comes from japan wiki and are a bit blurry sometimes (mainly because of original vs reprint version of event), so please take it cautiously.