Question about Chunins
 

About how long does a tournament of this level take to go until completion? I know it varies based on turnout but I was hoping for a general idea. Also, will I be able to create a Bandai ID at an event like this? It would be my first tournament of any kind so I don't already have one.

From start to finish, the shortest amount of time a Chunin will usually take is around 8 Hours.

This is derived from 4 standard Swiss rounds of 55 minutes each, plus a Top 8 round, a Top 4 round, and a Top 2 round of a slightly longer amount of time. Add in maybe 5 or so minutes between each round and it's around 8 hours.

Depending on the turn out though, it can be a bit longer. Though, if you don't make it into the Top 8, there's no need to stick around, as after that point, there are no more random prizes being handed out and everyone should have received their promos by then as well.

What Shino'sDad said, and yes, the meijin should have a bunch of registration forms on hand.

Oh wow that's a lot longer than I expected. Would it still take around 8 hours even if the turnout was very small? Like around 15 players?

that would be about 4-5 rounds at about 50 mins a round followed by top 8 which i think is the same then top 4 then top 2