We have one of those in town and the double entrance does not bug me too much. Its the point where both lanes merge to get to the payment window. People will always try and finish thier ordering process faster than me and then jam up into the merge lane ahead of me while not looking in my direction. People just take it for granted that they are next without regards to the one car from the left lane and then one car from the right lane unspoken courtesy.
These people that visit Mc' D's are typically the lowest form of existence (its not like they are eating at a five star restaurant). Its dollar menu D I C K heads