Your best bet would be to call the airport (search the airport name on Google, and call the contact information). Otherwise, it is generally alright to bring prescriptions, but it is probably be a good idea to bring a note from the doctor.
Here is a good article explaining the rest:
http://www.everydayhealth.com/healthy-travel/traveling-with-medications.aspx
Yes.
3 sandwiches
Yes, resident physicians can write prescriptions. They are licensed (though not yet board eligible or board certified) physicians.
Probably, but they might want to inspect it first.
It all depends on the type and size of airplane.
You can board it and you can also fly it.
Airport
You can carry cigarettes (& cigars) on an airplane however there is no smoking allowed on board.
Yes. You can take any prescription drug on board provided it is properly labeled, in your name. Now if you mean can you take a Viagra on board? sure, if you want to join the 'mile high club' and need Viagra to do so
Yes.
Depends on the make.
You always board an airplane on the left because the right side, whether having one engine or turbofan or two, is running to supply the aircraft with power.