Going to be an interesting call for the ACC.
The SEC exclusively lies in a region of the country where the states were the most eager to re-open and where the attitude generally puts the onus on the individual to decide the extent he/she wants to re-introduce into a post-COVID world. That has and will make it easier for the conference as a whole to move forward with football in the Fall.
The ACC has schools in those states (FL-GA-SC-KY), but the ACC also has schools in states that have generally been more cautious about re-opening (VA, PA, MA, NY). Also, Clemson has become such a dominant force and a cash cow for the conference's football fortunes would think that Clemson is generally in position to largely impose its will on the ACC on football related decisions. To the extent that SEC takes steps to re-start football and make moves to assist their football programs (like opening up campus facilities for Summer workouts), Clemson will insist on doing the same as their competition is LSU and Bama, and Clemson has to keep up. ACC will be walking a narrow line to ensure all interests are considered.