I've encountered another approach in NYC which I haven't seen mentioned here. Some higher-end restaurants require a credit card number (over the phone, maybe o

I've encountered another approach in NYC which I haven't seen mentioned here. Some higher-end restaurants require a credit card number (over the phone, maybe online is possible too) which they tell you they will charge e.g. $25 per person for no-shows. The first time I was a bit put-off (giving out CC numbers on the phone never feels great), but now I'm more sanguine about it. Aside: in central London, booking is essential. Many decent (not even high-end) restaurants have most of their tables booked in advance. I did a double-take the first time I walked into a place with two-thirds of its tables empty and was turned away. "Fully booked" seems a lot more common there. I never knew a restaurant to charge for booking, but I did know people who paid "unofficially" to get tables, or had office assistants scramble for them.