Jomtien Immigration allow immediate application and next day issue if you apply with the help of a local visa agent. Costs 4,000 baht including the 1,900 baht that immigration charge for the extension. Enjoy your time in the Land of Smiles
Bumrungrad Hospital sorted my medical visa. It wasn't time specific, it lasted as long as required to be able to fly after surgery which, in my case, was a little over three months. BTW, it is not free!'
I was already in Bumrungrad Hospital in Bangkok, I needed 90-days recovery after surgery. The hospital took care of everything. Sorry don't know the deal if you are stuck in your hotel but your travel insurance will sort this out on your behalf
I have entered Thailand by air four times this year, three of those times I was asked to show my departure flight within the 30 day visa exempt period at BKK. It makes sense to have this, along with proof of funds and accommodation to hand when going through passport control.