I was highly skeptical having read so many bad reviews about VTG but the Cunard cruise looked a steal. Their agent is in Houston, we are in Australia. On first call we got an email saying cruise held for 24 hours which gave time to get flights. Ok, so we have the flights, now to pay for the cruise. VERY wary of giving credit card details by phone or email - asked why no secure payment site and no good answer but was told payment goes to Cunard not VTG so that made me feel slightly better. Anyway, we paid and yep, immediately on our credit card statement showing Cunard and very soon after I logged into Cunard and there we are. Had a couple of errors in dates and addresses that the agent quickly resolved. To be fair, the agent has been very helpful, not at all pushy, keen to fix things so credit to him (Luis).
So, maybe I’ve been lucky - and hope it last.