whole foods hot bar?

im pretty sure my doctor told me not to eat at buffets but im wondering if grocery store hot bars/ salad bars are bad too i got some mac and cheese from the hot bar at whole foods and ate it already but for future reference should i stay away? its basically the same idea as a buffet right but i feel like whole foods has a lottt less people around and touching the food or little kids touching it or whatever and just more clean than a buffet in general