I used to do that but often I would never get filled. I would rather see a broker offer something of a hybrid, e.g., total order of 20k shares, but minimum fill order of 5k shares. No one offers that to my knowledge.
I was one of those larger buys. I've got shares from way back, but just got interested again...starting to accumulate. I think it will eventually get to $5, but this uncertainty around Fun makes me a bit uneasy---I'm going at it slowly.