Greenhouse Restaurant and Terrace Bar at Avani Sukhumvit Bangkok has a KTC all-you-can-eat offer running through 30 December 2026. The 90-minute menu contains more than 60 dim sum, Thai and international dishes with free-flow soft drinks. The standard selection is THB 699 net per person, reduced from a stated THB 890 net; the premium selection is THB 1,199 net, reduced from a stated THB 1,490 net.
Service runs daily from noon to 9:30pm, but the 90-minute clock and last order should be confirmed for the chosen seating. Advance reservation is required and tables remain subject to availability. The privilege is available to KTC cardholders for up to ten people per card per visit, outside public holidays, festive periods and special events.
Choose A Menu
Ask for the current standard and premium lists before reserving. The THB 500 difference is worthwhile only when the premium dishes are items the table genuinely wants. Check whether every person at one table must take the same tier, how children are priced and whether leftovers or excessive orders carry a charge.
Reserve Clearly
Call or book through the hotel’s accepted channel, give the date, seating time, party size and KTC cardholder name, and mention the exact KTC all-you-can-eat privilege. Ask whether the date is excluded and retain the confirmation. A normal restaurant reservation does not necessarily reserve the promotional menu.
Use The 90 Minutes
Arrive early enough to be seated and briefed before the dining period begins. Order a small first round across dim sum, Thai and international dishes, then repeat favourites. Large opening orders cool quickly and can create waste. Ask when the final order is taken rather than assuming it matches the end of the 90 minutes.
Pay Correctly
Tell the server about the KTC privilege before ordering and present an eligible card at payment. The campaign cannot be combined with other promotions. Review the net per-person rate, child charges, supplements and any separately ordered drink before authorising the transaction. Keep the receipt until the charge settles.
Plan The Journey
Avani Sukhumvit Bangkok is connected to the On Nut area, making BTS On Nut the simplest arrival for many diners. Allow time to find Greenhouse inside the hotel. If driving, ask about parking validation. A net price is useful, but transport and premium supplements still belong in the meal budget.
Who Saves Most
The deal best suits a group that wants a structured hotel buffet and can use the full 90-minute service without rushing. The standard tier offers the lower commitment; the premium tier should be chosen for its actual dishes, not status. A quieter weekday meal may deliver more value than a crowded excluded holiday date.
At A Glance
- Campaign dates: 15 January to 30 December 2026 within the hotel dining campaign.
- Standard menu: THB 699 net per person; stated regular price from THB 890 net.
- Premium menu: THB 1,199 net per person; stated regular price from THB 1,490 net.
- Format: More than 60 dishes and free-flow soft drinks for 90 minutes.
- Hours: Daily, noon to 9:30pm; confirm seating and last order.
- Reservation: Advance booking required; maximum ten people per card per visit.
- Location: Open in Google Maps
Questions
How long is the buffet?
The all-you-can-eat service is limited to 90 minutes.
Are drinks included?
The offer includes free-flow soft drinks; confirm the current selection.
Can I visit on a public holiday?
No. Public holidays, festive periods and special events are excluded.
Do I need to reserve?
Yes. Advance reservation is required and remains subject to availability.
