No problem.  I work closely with them and often source new suppliers around the world whenever I need accessible transport for my clients.

You can also book accessible taxis in many destinations on this website:  http://www.wheelchairaccessibleholidaytaxis.com

Yes, it is possible with advanced notice –https://www.greyhound.com/en/help-and-info/travel-info/customers-with-disabilities

Yes, it is accessible.  See further details… https://www.maidofthemist.com/plan-your-trip/faqs/