So apparently you’ve been getting something extra by Marriott management at other hotels. That’s very nice of them, but it does not mean everyone else has to give you access to the Internet throughout their building. Since it sounds like you’re guest password isn’t working for your car, I don’t think a hotel to give you access to any other network so your car can have access to the Internet. LOL

And if your wife is in the car, can’t she just used her cellular network. I’m not sure that having dash cameras is actually going to give her security walking to and from the car if that’s what she’s trying to get