1. Yes. It's not likely you'll get on physical store shelves anyway.
2. Yes, IngramSpark distributes to Amazon. The terms for a print sale through Amazon are exactly the same as for a sale through any other retail outlet in that geographic market. You cannot avoid Amazon for print distribution through IngramSpark. You can opt out of having IngramSpark distribute an ebook to Amazon, but I don't recommend IS for ebook distribution at all. Go direct where you can (KDP, B&N, Kobo, Apple Books, Google Play) and use Draft2Digital, Smashwords, or something similar to reach the rest.