"First Consecrational Church." The main character parks outside an Episcopal Church (identifiable by the trademark red, white, and blue hanging garden sign). When inside, the Papal Flag (Roman Catholic) is on display in the background.
When Alden falls during the egg and spoon race, it is noticeable that the egg is attached to the spoon, in other words that it is a singular prop and not an egg and a spoon as separate items.
Charlie and Zadie insist that the entire town of MacKenzie is going off the grid in the spirit of the Renaissance Fair to the extent that Charlie will not tow or fix Alden's car or even recharge his cell phone on the day of the Fair because cars and cell phones and electricity didn't exist in the 16th Century, and yet at the Fair itself they sell their toy planes, trains and automobiles, which definitely did not exist in the 16th Century.
The given name of the character portrayed by Natalie Hall is stated throughout the movie as Megan. It is listed at Margo in the end credits.