In a scenario where fuel wallet limits and refund issues exist, is it still prudent to keep funds deposited in them? I'm worried about the regulatory risks. Wouldn’t switching to UPI or bank-backed fuel cards be safer and provide me with more flexibility?

I'm traveling to Japan for a project for 7–8 days. How can I make the most of the 25% cashback on in-store purchases with the RuPay JCB network? Are there any specific merchant categories or spending limits I should be aware of?