Will I need a visa for a Diamond Princess cruise to South East Asia?

Will I need a visa for the Diamond Princess cruise in October calling at Vietnam, Cambodia, Singapore etc?

Assuming you are a British citizen, you will need a visa to visit Vietnam and Cambodia, though you won’t need one for Singapore. In most cases, your cruise line will take care of all the visa requirements for each country you visit which requires visas and charge a fee to your account, so you won’t have to worry about applying beforehand. Ask your Cruise Concierge to check with your cruise line that they’ll take care of visas if you are unsure.