Yosef Karo, Translation:Shulchan Aruch — Orach Chaim 695…
“ One who does more and one who does less [are both praiseworthy] , as long as they direct their heart toward heaven. One should not fast on Purim, except for a fast for a [bad] dream, and see 568 and 570. There are those who have the custom to dress in Shabbat/holiday clothes on Purim, and this is correct (Maharil) . We have the custom to make the Purim meal after the afternoon prayer and pray the evening prayer at night. We pray the afternoon prayer while most of the day remains, and most of the meal needs to be during the day (Minhagim) . ”
