This is an important question, and the answer requires understanding both the law and current practice in Dubai.
The Official Law & Policy: Yes, it is against the law for unmarried couples (including heterosexual and same-sex couples) to share a hotel room in Dubai. This is based on UAE federal law, which prohibits cohabitation and sexual relations outside of marriage.
Current Reality & Enforcement (The Critical Nuance): While the law exists, enforcement in major hotels, especially international chains in tourist areas (Dubai Marina, Jumeirah, Downtown, etc.), is extremely rare and relaxed. Dubai is a major global tourist and business hub, and hotels primarily cater to international visitors.
In practice: Most 4- and 5-star international hotels do not ask for proof of marriage at check-in for male-female couples. They operate on a “don’t ask, don’t tell” policy to avoid inconveniencing tourists. It is standard practice for unmarried international couples to book and stay in the same room without issue. Some budget hotels or local hotels outside main tourist zones might be more conservative and could potentially ask for a marriage certificate, but this is increasingly uncommon. The key is discretion. Public displays of affection or behavior that draws attention could lead to problems if someone complains. The risk is higher for same-sex couples, as homosexuality is also illegal.
Important Considerations & Strong Recommendations: