Hi Kerry,
Of course I can - The National Parks, Mount Rushmore & Little Big Horn trip on the 16th September is fully booked with 40 of you travelling. Ages of those in the group range from mid(ish) 30s - mid-80s!
If you haven't read them already - there are some great reviews of this trip in the reviews section. I hope they only add to your excitement!
Kindest regards,
Julia
P.S. I know exactly how you are feeling! I too am going away in September - I booked my holiday in January and have barely slept since due to excitement. I've even got an app on my phone that is counting down the days until I leave! (only 164 days to go)