In general I think you've summed it up very well for the for the freeroll tournies from what I've found. I don't play limit nearly as much as NL, but there does seem to be a lot of donking going on in limit (maybe not more or less per se, but different maybe). My guess is that many of these players are converts from NL and they don't understand the concepts, odds
, etc, well enough. They just know that they can't bet as much in one bet like they could in NL, so they just keep raising. Stay tight early, for sure and let them kill each other. It is always easier to get the chips off of a big stack donk than it is to get them from five average stack donks. Let them eat their own then go after the big one.