There is more festive rejoicing on the Seventh Day (Shevi’i shel Pesach) and on the Last Day of Pesach (Acharon shel Pesach) than on the preceding days of the festival.1
It was the custom in Lubavitch to stay awake throughout the night of the Seventh Day of Pesach, as well as on the [first] night of Shavuos and the night of Hoshana Rabbah. One should study Torah all night.2
The congregation stands during the public reading of the Shirah [i.e., the Song of the Sea; Shmos 15:1-19].315
At the evening and midday meals of the Last Day of Pesach it is customary to wet the matzah.3
On the Last Day of Pesach, when the fingertips have been washed with mayim acharonim at the end of the meal, one resumes the usual practice of passing them over one’s lips.
After Mussaf on the Last Day of Pesach the preferred procedure is to recite Kiddush, and then to pray the Minchah service before the [midday] festive meal.4
The Baal Shem Tov would partake of three meals on the Last Day of Pesach. He used to call the third meal of that day, Mashiach’s Seudah (“the festive meal of Mashiach”).5
