Sukkah 25a-26a
Who is exempt from dwelling in a Sukkah and why? \u2022 While engaged in fulfilling a mitzvah, may one switch to another? \u2022 Other than Tefillin, a mourner on the first day is obligated to fulfill most mitzvos - why isn't this obvious? \u2022 A mourner is not obligated to suffer \u2022 Why are a groom and his revelers exempt from Sukkah? \u2022 Why is an orchard watchman exempt from Sukkah?