The difference lies in the approval process. A "Booking" (often called Instant Book) allows a guest to confirm their stay immediately without waiting for the host's permission. If a listing has the lightning bolt icon, your credit card is charged and the dates are blocked as soon as you click "Book." A "Request to Book," on the other hand, is a manual process. When you submit a request, the host has 24 hours to review your profile, read your message, and decide whether to "Accept" or "Decline." Your payment is only authorized (not fully captured) until the host approves. In 2026, many hosts use "Request" to screen for specific house rules or to ensure the guest is a good fit for a unique property. For guests, "Instant Book" is much faster and more certain, while "Request" is the standard for high-end villas or hosts who are more selective about who stays in their private homes.