This is Heather & Donny! These two, and their wedding day, are SO right up my alley. A music teacher (Donny) and a science graduate student (Heather), both very outdoorsy, into good beer and good food, and planning a wedding that is, in Heather’s words, “fun, casual and not take it-self too seriously”. Yes! Heather’s parents have a house in South Harpswell and she had been going there for years in the summers, so the area was an obvious choice for them. They chose Johnson Field for their ceremony — a stunning spot overlooking Mackerel Cove — and had their reception right up the hill at Bailey Island Library Hall —…