to (one's) heart's content
As much as or to the point that one desires; to the point of contentment, satiety, or surfeit. I've made plenty of food for everyone, so please eat to your heart's content. The monthly pass allows customers to see movies in the theater to their hearts' content.
to one's heart's content
Fig. as much as one wants. John wanted a week's vacation so he could go to the lake and fish to his heart's content. I just sat there, eating chocolate to my heart's content.
to (one's) heart's content
To one's entire satisfaction, without limitation.