Gatlinburg and Pigeon Forge:

8:00am Leave hotel/condo/cabin and get in SLOW traffic on way to breakfast

8:30am in line for breakfast with a 1 hour wait

9:30 seated at table

10:40 leave restaurant

1:20 minutes to do what you want before lunch

Noon in line at restaurant to eat, 1 hour wait

1:00pm seated

2:15pm leave restaurant

3 hours 45 minutes to stand in long lines and crawl through traffic until you get in line to eat supper/dinner

6:00pm in line at restaurant with 1:45 wait

9:15pm leave restaurant

Crawl in traffic to next destination.

Summary:
In a 12 hour day you will spend the majority of it in traffic, waiting in lines and waiting to eat. Not my cup of tea.
You’ll easily spend 6 hours per day waiting in line to eat, waiting to order your food, waiting to be served your food that you’ve ordered

Y’all enjoy.