Hotel reservation system with room- and bed-level inventory

What Reservations & ARI does

• Availability calendar — a grid of every room and every date, colour-coded by status.
• Room-level and bed-level inventory — sell a private room or a single bunk in a dorm from the same calendar.
• Overlap-proof bookings — date-range constraints enforced by the database, so concurrent bookings can never collide.
• Multi-room reservations — one booking, several rooms, one guest, one folio.
• Change the departure date — extend or shorten a stay without cancelling it; nights already agreed keep their agreed rate and only added nights are priced.
• Upgrade or downgrade — move a booking to another room type; the stay re-prices and both totals are shown so the difference can be quoted.
• Reservation lifecycle — enquiry, tentative, confirmed, checked-in, checked-out, cancelled and no-show, with full status history.
• Cancellation and no-show handling — cancel and release inventory; night audit flags no-shows automatically.
• Stop-sell and closeouts — close a room type or a date range for sale in one action.
• Waitlist — take a name when you have to say no; matching guests are surfaced, oldest first, when rooms come back on sale.
• Group holds and rooming lists — hold rooms per type per night with a cut-off date and a pinned group price, then fill the hold from an organiser’s list in one step.