Does the groom have to install the balloon arch?

No. Balloon arches are common decorations at weddings. Whether it is an indoor wedding or an outdoor wedding, the child symbolizing love has a very special significance at the wedding scene, but it can be replaced according to one's own wishes and can be replaced with other things. The balloon arch at the groom's house is unnecessary. Arch refers to a door with an arc at the upper end, and also refers to a door with an arc crossing or other symmetrical curves at the entrance.