Your dream seems to reflect themes of change, uncertainty, and protection.

The dinner with strangers and the constant movement between tables may symbolize feelings of being out of place or the need to adapt to new situations in your waking life. It could indicate a search for connection and belonging, as well as the challenges that come with social interactions.

Transitioning to the beach with your significant other and unfamiliar people suggests a shift in your environment or relationships. The presence of the couple and the little boy might represent aspects of family or nurturing, and the little boy specifically could symbolize innocence or vulnerability.

The big waves crashing down can indicate overwhelming emotions or challenges you might be facing. Water often represents the subconscious, and violent waves may symbolize fears or anxieties that are surfacing. The dent in the sand could represent the impact of these challenges on your life.

The frantic search for the little boy, who ultimately is right next to you, may suggest that while you may feel anxious about losing control or protecting what is dear to you, there is a reassurance that everything is okay and that you are not alone in facing these uncertainties.

In summary, your dream could be urging you to acknowledge any feelings of instability in your life, but also to trust in your ability to navigate through them and protect what matters to you. Consider reflecting on any current situations that might be causing you stress or anxiety, and think about how you can find stability amid change.