Walima (Arabic: وليمة walīmah), or the marriage banquet, is the second of the two traditional parts of an Islamic wedding. The walima is performed after the nikah (Arabic: نكاح) or marriage ceremony. The word walima is derived from awlam, meaning to gather or assemble.
Being separate from each other for a short or long time does not nullify the marriage. In the rulings related to marriage, a husband is not allowed to travel or be away from his wife for more than 4 months. In the case that he does, and the wife does not approve of it, he is sinning and if she does not approve, it will be grounds for divorce.
So, if the husband abandons for more than 4 months, he is committing a sin and that is haram, unless the wife approves, or he has a valid excuse, or the husband had stipulated this in the marriage contract.
But, in any case, the Nikah will still be valid, and it will not automatically become nullified, even if years pass.
However, if the wife give consent, and approve of being distant from each other, then that is permissible and allowed.
And Allah knows best.
Nikah is the religious marriage contract between man and woman after reciting it between them, they become husband and wife. Sexual relationship between them depends on the mutual understanding and agreement between them. Usually, there is an understanding that sexual relationship starts when both live together after wedding and not before that. Same also about the responsibility of the husband to spend on his wife, starts when they live together.
Nevertheless, if she agrees to have any sexual relationship or sexual act between her and her husband after Nikah, it will be allowed.
It is advisable to keep the intimate relationship limited and avoid full sexual intercourse until they live together.
Walima does not aim only for feeding but also aims to achieve the gathering and meeting which is important by itself, as Islam encourages strengthening the family meetings , neighbors meetings and social relations.
Distributing food among neighbors is also very good act by itself which has great reward.