|Response #4 is good. That assumes puppy can configure your hardware, including the WiFi. |
However, you mention doing banking in a hotel. I would highly recommend against doing that on any public network. email is OK unless it contains information that you don't want others to gain access to. Browsing, of course, is acceptable.
I would also clear this with your IT department. Information on the laptop may be vulnerable while online.
I recently bought a net book to use for just such occasions.