MelodyB
Grudging.
Delighted.
Paid.
Take (n) advantage of.
Needed.
Necessary
Happy?
All sorts.
I went to the Tate modern a few weeks ago. Stood on a bridge watching a flash mob. They varied their performance between singing and 'playing' chasing games. They seemed solemnly into the singing however the smiles while they were 'playing' came across as forced and uncomfortable.