Hi Buckman.
I live nine miles from Alton Towers. Yes the admission price does include all the rides, and the inevitable queues if it's busy and it usually is. We rarely go anymore as my Wife doesn't like the rides either, so it's a very expensive walk for her. Discounted tickets are sometimes available from newspapers but again these days tend to be extremely busy. I believe you can also use Tesco vouchers.
Drayton Manor Park which is about 38 miles away from Alton I believe is better value as the admission price doesn't include the rides, you have to pay extra for a wrist band to go on them. So, you're not paying for something for nothing.
You would be staying in what is probably the most scenic part of Staffordshire, The Staffordshire Moorlands and close to the Derbyshire Dales with Dovedale only twenty minutes away and The Peak Wildlife Park at Blackbrook even closer.
So, if Alton Towers isn't an option there is plenty to do and see in the vicinity.
PS. I've just checked the Alton Towers website and advance tickets are from £36 plus CAMC offer 10% discount.
Buy Theme Park tickets and passes for Alton Towers. Save on your family short breaks & days out. Book online for unbeatable deals on unforgettable memories.
www.altontowers.com
To be perfectly honest though I wouldn't even entertain visiting in August during the school holidays. The queues to actually get near the place, the carparks and the monorail to get you to the turnstiles will be horrendous. Sorry to pour water on your plans but I am speaking from bitter experience.