Could you explain in detail how the rewards structure works on the HDFC Diners Club Black Credit Card, including the points earned on various types of spending and any special bonuses or milestone benefits?

I am traveling to Australia. What travel insurance is best suited for medical emergencies in Australia? Should I opt for an Indian or Australian insurer? Which Indian companies, Tata AIG, Bajaj, ICICI Lombard, HDFC Ergo, and Reliance, offer the best hospital coverage in Australia?