How to check if someone is driving drunk at the hotel entrance?

This requires drunk driving checkpoints and roadblocks.

The traffic police first use an alcohol detector to conduct a breath alcohol test on the driver. The test results are recorded by the traffic police and signed by the driver. If the test result is confirmed to be driving after drinking, the traffic police will deal with the offender in accordance with the "Road Traffic Safety Violations Handling Procedures"; if the test result is confirmed to be non-drunk driving, the offender will be released immediately.

Don’t drink while driving, and don’t drive after drinking. Be a good citizen who abides by calligraphy rules, does not drink and drive, and is responsible for yourself and your family.