I mix it up all the time with these $10 on demand freerolls...they happen about every 30 mins or so and with that short window i have a recent tendency to play much looser and much more aggressive - if i get knocked out, its no big deal because a new game will start soon - I will 3bet or 4bet all in with KQ offsuit, A8 suited, 44, 55 - things like that. Weaker, less than optimal holdings.
As mentioned players in these things from the jump are extremely loose and there's almost a preflop all in every hand for the first two levels. So i tend to try and get it all in multi way with marginal hands like 9T suited or QJ suited - things like that. Tight players in the hand will have AK, AQ, etc...but 4 players to the flop with a marginal hand is almost always more live than the better holdings...tighter players are generally holding and folding each others outs. Anyhow, if you hit one of these multi way pots and you 3x, 4x, 5x your stack from the jump - you are setup for smooth sailing and can run deep in these tournis. If you get it in and lose against a starting stack you've still got 3x or 4x what you started with, so it gives you room to play and call lighter than usual.
So for my advice - playing tight if you want to is ALWAYS a solid strategy, but out of 700 people playing, 550 of them are inexperienced "dont give a damn" type donks lol and you can put me in that category with them once in a while - eventually their little 95off will best your AK after your 4bet preflop. Like i said from the jump, have fun, mix it up - get it all in where you maaay be good or have a good chance of slamming a multi way pot. I ran into the top 50 in 3 of these events last night, tough enough to do on its own much less cash these things. I wish you luck, have fun with it and keep playing.