Hi matt welcome to the Phils

As others have said just keep your wits about you don't flash money around,don't wear jewellery & try to be with one of your family as much as possible

Tarlac is a safe place in general....my wife is from Tarlac a place called San Miguel can't forget that lol as in the beer..., where in Tarlac is your wife from?

I'm sure that you will have a wonderfull time enjoy mate