We are scheduled to pick up our hire car at the Enterprise office in Marginal Way Portland at 12 noon on the 10th of September. We will be heading out to Sebago lakes and plan to visit Portland a few days later. Can we expect heavy traffic at that time. It will be the better half's first day of driving on the opposite side of the road. He has done this many times before but is on edge for a couple of hours until he gets used to it. Ideally it is best to start off in minimal traffic but of course this is not always possible.