Yacov asked me if I celebrate Sukkot (the Feast of Tabernacles).
I am a Ben Noach (son of Noah). Bnai Noach (sons of Noah) are Gentiles who observe the seven commandments of Noah, who was the greatest example of a righteous Gentile in the Torah.
We believe in the G-d of Israel Who revealed Himself to the entire Jewish people at Mount Sinai. We believe in the eternal covenant between G-d and His Chosen People, the Jews.
However, we are Gentiles. Gentiles are NOT required to convert to Judaism. And Gentiles do NOT have to observe the 613 commandments which G-d gave to the Jews. We have it much easier than the Jews - we have only seven commandments.
We do not observe the Jewish Sabbath, we do not observe most Jewish holidays, we do not have to eat kosher food, we do not have to be circumcised. (Since I was born in a Catholic hospital to a Catholic family, I am not circumcised.)
However, in the future, we will have to observe the universal Torah holiday of Sukkot. (See Zechariah 14: 16-18 for the Biblical commandment to the Gentiles to come to the Holy Temple in Jerusalem to worship HaShem (G-d) on Sukkot.)
But until the Messianic redemption, most rabbis rule that Bnai Noach are not yet REQUIRED to observe Sukkot.
I did go to a Sukkah (booth) this year because I want to learn the customs that I will have to observe in the next world, and because I want to see how my son (who is a convert to Judaism) worships with his wife and with my two grandchildren.
Some day ALL righteous Gentiles will make the pilgrimmage to Jerusalem and the whole world will worship the One G-d of the Universe.