This dream seems to carry several significant themes, each potentially reflecting aspects of your waking life and emotions.

1. Hoarding and Clutter: The hotel suite filled with clutter may symbolize feelings of being overwhelmed or burdened by responsibilities or unresolved issues in your life. It could represent emotional baggage that you and your wife are dealing with, perhaps indicating a need to declutter not just your physical space but also your emotional or mental space.
2. The Two Little Girls: Their arrival and the lecture about safety might signify a protective instinct or concern for the well-being of those close to you, including perhaps your own children or younger family members. They could also represent innocence or vulnerability, suggesting that you may be feeling a need to safeguard your loved ones in a chaotic situation.
3. The Threatening Man: This figure might embody feelings of intrusion or threat in your life—perhaps a fear of losing control or being confronted by external pressures. His demand to speak with your wife could indicate feelings of inadequacy or discomfort regarding your relationship dynamics. It could reflect anxieties about others infringing on your personal space or authority.
4. Loss of Control: The feeling that the man and his girlfriend are taking over your belongings can symbolize fears of loss—whether it be control, security, or even identity. This might reflect a situation in your life where you feel that someone else is encroaching on your territory or decisions.

Overall, this dream suggests a need for you to address feelings of overwhelm, protectiveness, and potential threats in your waking life. It may be beneficial to communicate openly with your wife about any concerns or stressors you are experiencing together. Finding strategies to manage clutter—both physical and emotional—could also help alleviate some of the anxiety depicted in your dream.