Charities Act (Cap. 37): Governs fundraising activities, including permit requirements for solicitation, disclosure obligations, and regulated methods of fundraising. Essential if the anniversary celebration involves any charitable components.

Personal Data Protection Act (PDPA): Regulates the collection, use, and storage of personal data. Important for managing guest lists, invitations, and any data collection during the event, including consent requirements and data protection measures.

Companies Act (Cap. 50): Regulates corporate matters including sponsorships, corporate disclosures, and business communications. Relevant when dealing with corporate sponsors or business-related communications for the celebration.

Singapore Tourism Board Act: Covers regulations for large-scale events, including necessary permits, licenses, and safety requirements. Particularly relevant if the celebration is a significant public event.

Public Entertainment Act: Governs entertainment activities, public gatherings, and related licenses. Includes regulations on noise levels and public performance permits for celebration events.

Gambling Control Act: Regulates activities such as lucky draws and raffles, including permit requirements and prize value restrictions that might be part of the celebration.

Consumer Protection (Fair Trading) Act: Ensures fair trading practices, truthful representations in solicitations, and clear disclosure of terms and conditions in any promotional materials or communications.