[notpushkin]

Perhaps it's cheating a bit, but most of the time they don't check credit cards you use for "booking confirmation". A friend of mine used to use 4242 4242 4242 4242 for quite some time, and when they've blocked it, he switched to his own debit card with spend limit set to $1.

[konha]

Using a fake CC or setting a spending limit doesn’t in any way absolve you from your contractual obligations.

[beastman82]

Yes. But in practice they ynot suing for breach and you don't have to get your money back