The weather can be iffy, even in summer. Your week by the beach may be mostly rain and or fog. Plan accordingly. There’s nothing wrong with hunkering down with a good novel when you’re away from everyday distractions.
Where I live the ocean is too cold for swimming. Period. Even before factoring for the currents. Further south and west, this can be iffy.
Black flies. They’re early summer, to mid-July. Inland, especially. You’ve been warned. They’re even worse than swarms of mosquitoes.
As for your expectations? A more laid-back lifestyle perhaps with antiquing is one thing. If you have kids in tow? That’s another. Hope they enjoy the outdoors.
If you go for a whale-watch anywhere, what you wind up seeing is what you are given that day. The best part may be simply the cruise out and back from the prime ocean. There are no other guarantees.
In many destination locations, retailers are faced with a six-week business model. Restaurants, lodgings, and stores have to cover most of their year’s expenses in those few intense weeks and then hold on through the rest of the year, if they stay open at all. Prices will be higher than you might like.
Nightlife may very well mean looking at stars.
Jnana's Red Barn 