You do. That exactly is the problem & why I started this off-topic angle thread bitching about the lack of limits. You can limit the actual charge on the credit card, but I see nothing capping the legal liability. i.e. They could in theory reposes your home because of an unpaid AWS account. In theory - I'd love to have someone prove me I'm wrong in this thinking. Until someone does though...this seems way too risky for a hobby/toy.
Technically, no. I doubt Amazon would risk the publicity and attempt to garnish your wages or pursue your assets; you could, of course, declare bankruptcy to protect your home from their judgement if they went so far as to obtain one.
No? There is a big difference between "Technically no" and "uh they probably won't" - especially when it comes to legal matters.
Remember the home repossession was an example - I don't even fall under US law. The house thing was code for "legally the can wipe you off the map".
It's not on them to check your credit limit and only spend that much while you get access to resources first. They will have a legal claim to get paid and will pursue it, especially if its 5 figures or higher. The collections industry exists just for this purpose.