If the decorations were entered into the Sukkah on Chol Hamoed, do they become prohibited in benefit?<a href="#_ftn1" name="_ftnref1">[1]</a>
Yes, they become prohibited in benefit immediately after Bein Hashmashos of that day of Chol Hamoed, unless a stipulation was made.
<a href="#_ftnref1" name="_ftn1">[1]</a> See Admur 638:9; Biur Halacha 638 “Assur”; Piskeiy Teshuvos 638:4

Shulchan Aruch HaRav | ❓If the decorations were entered into the Sukkah on Chol Hamoed, do they become prohibited in benefit?

If the decorations were entered into the Sukkah on Chol Hamoed, do they become prohibited in benefit?[1] Yes, they become prohibited in benefit immediately after Bein Hashmashos of that day of Chol Hamoed, unless a stipulation was made. [1] See Admur 638:9; Biur Halacha 638 “Assur”; Piskeiy Teshuvos 638:4