Yes and no,because with this game on mobile,you wont have as friend nobody you know,so what CAT said is the truth about ''Let me play'' and the biggest disadvantage is that you dont know that your Friend on mobile game wont be daily to give you your packs(morale,condition,etc) and this make me stay out from this type of game.
On Facebook,you have friends,bidding is faster than the phone..
About playing the option ''Let me play'' is your choice...