Right now for Covid, I believe each tour vehicle is restricted to 10 people, including the driver, for Yellowstone. Some tour companies are only doing private/family tours, not groups. Here are the approved providers. Unfortunately they are not sorted by location for summer, but the Jackson area code is 307.
Here's a link to one of the Brushbuck day tours into Yellowstone -
FOR GROUPS OF 12 OR MORE, PLEASE CALL US
Yellowstone Park is currently in Phase 1.
Limited commercial tours (transporting 10 people or fewer with
proper social distancing) may commence in Phase 1 after tour
operators have submitted required COVID-19 mitigation plans
to the park and have received approval. Larger commercial
tours will be restricted initially.
I have yet to see anything regarding increased tour passenger numbers for Phase 2 which the park is hoping to go to some time during the summer, but I do recall from last year's reopening plan did not allow the large commercial tours until Phase 3.
DebEdited: April 21, 2021, 6:20 am
Thanks for the info!