Is it safe to stay at the estuary for one night?

Safe. But pay attention to security issues:

1. Theft and robbery: When traveling, especially in crowded places, you should always take good care of your belongings to avoid being the target of theft and robbery.

2. Traffic safety: In the estuary area, traffic may be congested. Pay attention to the traffic rules and ensure the safety of yourself and others.

3. Natural disasters: The estuary area may be affected by natural disasters such as floods and typhoons. Before going out, you can check the local weather forecast and early warning information so as to take corresponding measures in time.

4. Health problems: Pay attention to personal hygiene and food safety during travel to avoid food poisoning and other health problems.