The Feast of Tabernacles lasts for eight days and the first and eighth days are Sabbaths. So no work or shopping is done. These Holy Days like all the others are given to us by YHWH for ever.
Video Class link: https://www.youtube.com/watch?v=zlPhFpELp48
The meaning and and understanding of the Feast of Tabernacles class:
Leviticus 23:33 –36 “….And the LORD spake unto Moses, saying, Speak unto the children of Israel, saying, The fifteenth day of this seventh month shall be the feast of tabernacles for seven days unto the LORD. On the first day shall be an holy convocation: ye shall do no servile work therein. Seven days ye shall offer an offering made by fire unto the LORD: on the eighth day shall be an holy convocation unto you; and ye shall offer an offering made by fire unto the LORD: it is a solemn assembly; and ye shall do no servile work therein.”
Psalms 98:6 With trumpets and sound of cornet make a joyful noise before the LORD, the King.
Leviticus 16:34 And this shall be an everlasting statute unto you, to make an atonement for the children of Israel for all their sins once a year. And he did as the LORD commanded Moses.
Ezra 3:4 They kept also the feast of tabernacles, as it is written, and offered the daily burnt offerings by number, according to the custom, as the duty of every day required;