I agree on the alignment. I always take my new rides to my front end and tire shop friend for alignment check by some one I have faith in.
On the rotate tires yes and no. My friends shop trues and balances my tires on the truck. So if a wheel is removed it must be replaced on the same spot and same studs.
When I first started this years ago, my friend said do not worry about rotating the tires. With the truing and spot on wheel/tire on truck balance you will get the full mileage out of the tires. On my first set of LT LTX m/s on my 90 sub, I got over 100,000 miles.
My current LTXs are Ps and do not wear as well as the first LTXs or LTs That said, I am at about 58,000 now and look like they will go 70,000 with no problem. No rotation since first truing and balance when installed. Wear is even as back tires wear with traction and front with the steering.
If they were not trued and balanced on the truck, I would rotate. Also the truing and on truck balance prevents the uneven wear, cupping and noise you get on aggressive tires.