def cbet, you're repping a very strong range raising utg, and betting into 4 opponents would only limit that range to AQ+, KK+ (considering you would slowplay QQ on that board). You can expect to take it down more often than not and if called you can safely shut down as someone must have a Q. 

even then if you'd double barrel anyone w a Q should be wary that they're up against an overpair. so def cbet and continue aggression if you feel your opponent is capable of folding a Q. in live tournies people are generally more scared to loose their chips than online so keep the pressure on imo.

I would definitely c bet on that board texture.  It doesn't even have to be that much..maybe like 5500..I don't think it takes much to take this pot down.  I feel that you are repping a very strong hand, and the c bet will eliminate villains and if called you can put them on a hand (usually a queen) and reevaluate the turn and your actions from that point on.  If another broadway card such as a K or A hits the turn, you can fire again because it will be tough for the viillain to proceed.  This action also takes in to account the starting stacks for the players at the table.  Best of luck.