I did this tour last May and would say there are good days and not so good days. Nothing to do with Just You! I have a review of this tour in the reviews section.
From a scenery point of view the part of Texas we went through was not great (as opposed to other US tours I have been on). The good / excellent parts were Dallas (6th floor), Fort Worth (rodeo evening), San Antonio (the Alamo) and of course New Orleans. Do go for the evening meal on the paddle steamer Nachez and Bourbon Street at night is a must.
Disappointed with Austin and the Houston Space centre. Everyone tells me that Cape Kennedy is much better, so I have booked the Florida tour in May.
Good size meals and steaks are good and also the alligator in New Orleans!!!
All the best
Malcolm