noun
banquet hall; party venue
A room or hall used for banquets, receptions, or large parties. Often found in hotels, restaurants, or event facilities.
ホテルの宴会場で結婚披露宴が行われた。
The wedding reception was held in the hotel's banquet hall.
この宴会場は最大
This banquet hall can accommodate up to 200 people.
会場 is a general term for any meeting or event venue; 宴会場 specifically implies a space for dining and social gatherings.
Compound of 宴会 (banquet) + 場 (place, hall). The reading じょう is the standard rendaku form of 場 when used as a suffix.