it is allowed to give the wedding banquet with any food which is available and affordable, even if that does not include meat. this is based on the following hadith narrated by anas: "the prophet stayed between khaibar and al-madeenah for three days during which he had consummated his marraige with his wife safiya . then i invited the muslims to his wedding feast. there was neither meat nor bread at his feast. rather, leather eating mats were brought out and on them were placed dates, dried milk, and clarified butter. the people ate their fill." [al-bukhaaree, muslim and others].