Live NL pre-flop raise sizing

[BrunoThePug]

I've never played live no-limit before. When I play online I use the 4xBB + 1BB per limper rule.

I'm going to be staying/playing at Treasure island who spreads a $1/$3 NL game. If I'm open raising I would raise to $12 using my standard pre-flop raise size rule. But it seems like while playing live making a $12 bet when most people are going to have stacks of $5 chips and some $1s for the blinds, will slow the game down.

I've also heard that most live games have much larger pre-flop raises, say 6xBB, or that some people just always raise to some set amount. Should I just observe the table for an orbit and see how it goes and raise what everyone else is raising or should I stick with the rule I'm used to using when playing online?