1. It's really your choice; you can get a draft (you MUST declare if more than $10,000), certificate/letter+stamped statement, cash (you MUST declare if more then $10,000). There is no preferred option. The important thing is you being able to provide proof (officially acceptable proof) that you have the funds.
2. You could carry cash (there is no limit to how much cash one carry, but you must declare amounts above $10,000), atm/debit/credit card (visa or mastercard). Since your not staying long, personally, I'd advise you carry cash, and the reason is tied to the answer for question 3. Or both cash some and your bank card.
3. If you're doing a short landing (which you are), you may want to think twice about opening a bank account. Owning a bank account is considered a secondary tie for residence in Canada, and therefore, comes with the possibility of you being considered a resident for tax purposes. This means you have to file taxes in Canada even while your are not in the country - you have to report your income outside Canada. So before you do this, you may want to do more research and if possible even verify with CRA. Additionally, opening an account comes with requirements such as a Canadian address, a utility bill in your name etc. Will you be in position to fulfill these requirements?
Finally, this particular thread is really about "PR card processing time-lines", and your questions are about "settlement issues". I'd advise you post these questions in the "Settlement Issues" category, I guarantee you will have quicker responses there. In fact, you'll notice these and many more questions have been asked and answered there. Just a friendly piece of advice.
All the best.
