Planetarium ticket and subscription platform

We manage a planetarium and science center and need a single web application that brings together all ways to buy a ticket, sign up for membership, or support us. The foundation is a ticket-sales engine based on show schedules with specific seat booking: each dome performance (full-dome films, live lectures about the night sky, laser music evenings) has its own capacity, price categories, and interactive seating map where viewers select exact seats, with proper handling of wheelchair and companion spaces. The calendar should display multiple halls and prevent double-booking while a seat is held in someone's cart. School field trips and group requests are a separate flow: a teacher requests a date, selects a program tied to the curriculum, specifies number and grade of children, and gets an invoice with deferred payment and printed confirmation. Membership and annual subscriptions require recurring billing, tiers (individual, family, patron), presale windows for members, and automatic discounts at checkout. A private events and dome rental module lets companies and birthday organizers book the hall outside business hours with budget estimation, deposit, and add-on services. The gift shop is a light catalog with inventory tracking, promo codes, and a shared cart with tickets. A donations module supports one-time and monthly contributions, named dedications, and progress scales for campaigns. Result: responsive frontend, admin panel for scheduling and refunds, point-of-sale mode, PDF tickets with QR scanning, payment gateway integration, and attendance and revenue reports.