Is it illegal for two couples to go out and get a room without a marriage certificate?

After the two parties register for marriage, they are legally married, and they can go out to stay in a hotel and check in through their ID cards. Will not be considered illegal.

legal ground

civil law

Article 1049 Both men and women who require marriage registration shall apply for marriage registration in person at the marriage registration office. Those who meet the requirements of this law shall be registered and issued a marriage certificate. The marriage relationship is established when the marriage registration is completed. Those who have not registered for marriage shall re-register.

Marriage registration ordinance

Article 4 When a mainland resident marries, both men and women shall go through the marriage registration formalities at the marriage registration office where one of the permanent residences is located.

If a China citizen marries a foreigner in the Mainland, and a mainland resident marries a Hong Kong resident, a Macao resident, a Taiwan Province resident or an overseas Chinese in the Mainland, both men and women shall * * * go through the marriage registration office where the permanent residence of the mainland resident is located.

Article 5 Mainland residents who apply for marriage registration shall submit the following documents and supporting materials:

(1) My household registration book and ID card;

(2) A signed statement that I have no spouse and no direct blood relationship with the other party and collateral blood relationship within three generations.

Hong Kong residents, Macao residents and Taiwan Province residents shall submit the following documents and supporting materials when registering for marriage:

(1) My valid passport and ID card;

(2) A statement notarized by the notary office of the place of residence that I have no spouse and no lineal blood relationship with the other party and collateral blood relationship within three generations.

Overseas Chinese applying for marriage registration shall issue the following documents and supporting materials:

(1) my valid passport;

(2) A certificate issued by the notary office or competent authority of the host country and certified by the Chinese people's * * and China's embassy (consulate) in that country that I have no spouse and no lineal blood relatives and collateral blood relatives within three generations, or a certificate issued by the Chinese people's * * and China's embassy (consulate) in that country that I have no spouse and collateral blood relatives within three generations.

Foreigners who register for marriage shall present the following documents and supporting materials:

(a) my valid passport or other valid international travel documents;

(2) A certificate issued by the notary office or competent authority of the host country and certified by the people of China and the embassy (consulate) of China in that country or the embassy (consulate) of China in that country that I have no spouse, or a certificate issued by the embassy (consulate) of China in that country that I have no spouse.