Short answer — common nightclub entry rules in Dubai (what to expect):

• Minimum age: typically 21+ for entry and to be served alcohol; some venues or events may allow 18+ entry but you won’t be served alcohol. (ClubbingDubai.com)
• ID: original, physical ID required — passport for tourists or Emirates ID/GCC driving licence for residents. Photocopies or phone images are often refused. (ClubbingDubai.com)
• Dress code: smart / smart‑elegant. No shorts, flip‑flops/sandals, sportswear, singlets, caps or shabby clothing; many clubs refuse entry for inappropriate attire. (ClubbingDubai.com)
• Door policy: many venues favour mixed groups, couples or table reservations; large groups of single men may be refused or required to book a table. Cover charges are common on busy nights. (dubai-adult.com)
• Behaviour & safety: intoxicated or disorderly patrons will be refused entry or ejected; strict zero‑tolerance for drugs; driving under the influence is a criminal offence. Smoking is banned indoors (some clubs have designated outdoor smoking areas). (dubaidancedistrict.ae)

Quick checklist to bring/know before you go:

• Original passport (tourists) or Emirates ID/GCC driving licence (residents). (ClubbingDubai.com)
• Dress smartly (no shorts, trainers/sportswear, caps). (ClubbingDubai.com)
• If you plan to drink: be ≥21 and have ID. (dubai-adult.com)
• Consider booking a table/guestlist for mixed groups or if you’re a large party, and expect cover charges on peak nights. (escortpalmjumeirah.com)
• Don’t attempt to enter intoxicated or with illegal substances; follow venue staff instructions. (dubaidancedistrict.ae)

Notes and practical tips:

• Policies vary by venue and for special events; check the specific club’s official website or social media for that night’s door policy, dress code and reservation rules. (dreamdxb.com)
• During Ramadan or special government notices, hours, music and service rules can change — confirm before you go. (HotEscortUAE.com)

If you want, I can: look up entry rules for a specific Dubai club (e.g., White Dubai, Soho Garden, Billionaire) and the dress/ID policy for a given date — tell me the club name and date and I’ll check their official policy.