Related for Sukkah 50:7
וא"ר אבא בר זבדא אמר רב חתן והשושבינין וכל בני החופה פטורין מן הסוכה כל שבעה מ"ט משום דבעו למיחדי וליכלו בסוכה וליחדו בסוכה אין שמחה אלא בחופה וליכלו בסוכה וליחדו בחופה אין שמחה אלא במקום סעודה
And R. Abba b. Zavda said in the name of Rav: A bridegroom and the groomsmen and all the wedding guests are exempt from the Sukkah all the seven days. What is the reason? Because they have to rejoice. But let them eat in the Sukkah and rejoice in the Sukkah? There is no rejoicing but in the huppah. But let them eat in the Sukkah and rejoice in the Sukkah? There is no rejoicing but in the huppah.
Tosefta Berakhot
Best men and bridesmaids, and all [other] wedding attendees are exempt from [the] prayer [of Shmoneh Esreh] and from [putting on] Tefillin (Phylacteries), all seven days [of the wedding celebrations], but [they are] obligated in reading the Shema. Rebbi Shila says, “The groom is exempt [from saying the Shema, Shemoneh Esreh and putting on Tefillin], but the wedding attendees are obligated [in all of them].”
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