@Txtea, James ...
I grow a lot of minis, too. They are holding up as well as the big roses. No difference in performance or in their ability to handle the drought conditions.
I have given away a lot of miniature roses that don't thrive in my normal hot summer temps because they need afternoon shade that I cannot provide. The only ones I kept, and that's a lot of roses, are the ones that can handle months of temps in the high 90s to low 100s.
I'll admit my drought care is different than how I handle them in my normal conditions.
Smiles,
Lyn