This dream seems to reflect themes of self-image, anxiety about social interactions, and the search for acceptance or belonging. Here are some insights into the various elements of your dream:

1. Public Setting: Being in a public place with your husband and friends indicates a desire for connection and social engagement. However, feeling unprepared (not showered or brushed) suggests anxiety about how you are perceived by others, particularly those from your past, like your high school acquaintances.
2. Unexpected Encounters: The arrival of your high school friends in a place they wouldn’t normally go points to feelings of nostalgia or unresolved connections from that period of your life. It may also represent a fear of judgment or comparison, especially in a social context.
3. Husband's Departure: Your husband's decision to walk away may symbolize feelings of insecurity in your relationship or fear of disconnection. You interpreted his actions as being upset with you, indicating a concern about how your appearance or readiness may affect your relationship.
4. Shower and Waiting: The act of waiting for your turn to shower can symbolize a desire for renewal or self-improvement. The full stalls may reflect feelings of being overwhelmed or having to wait for your needs to be addressed, which can lead to frustration.
5. Employee and Amenities: The worker offering you access to the better amenities because of your husband can signify feelings of privilege or support you receive from him. It highlights the importance of your relationship and how it can provide you with opportunities or comfort.
6. Code Repetition: Repeating the code (36363) signifies the importance of remembering what is essential for your well-being and access to better experiences. This could reflect a desire to hold onto positive aspects of your life and relationships.
7. Resolution with Your Husband: The heart message from your husband at the end of the dream suggests reassurance and love, indicating that your fears about his feelings were unfounded. This can symbolize that communication and connection are vital in easing your anxieties.

Overall, your dream might be encouraging you to reflect on your self-image and how it relates to your social interactions. It may also suggest the importance of communication with your husband to alleviate any misunderstandings. Consider what aspects of your life you want to improve or how you can embrace your authentic self in social situations.