Even smart casual can exclude things like sportswear, gymwear, flip-flops, etc. Be prepared to be asked to change.

Booking & arrival time - They may hold your booking for a limited grace period (e.g. 15–20 minutes) before releasing the table.

Cancellation / no‑show fees - As with many venues, there may be fees for late cancellations or no-shows — especially for big groups.

Smoking areas - Usually rooftop bars have designated outdoor smoking zones; smoking inside is generally disallowed.

Noise / music / DJs DJs and music are common on weekends; there may be limits on sound levels or cut-off times.

Private hire / event rules For private events, rules about décor, outside catering, noise, capacity, DJ/band, etc., will be stricter.

Access / safety - Rooftops may have capacity limits for safety, and certain areas may be restricted for guest safety.

Food & drink policy You likely have to order food / drinks from their menu—no outside food or beverages.

Right of admission reserved The venue can refuse entry if guests are inappropriately dressed or fail to meet behaviour expectations.