I am no expert, and in fact there are many more out there who know way more than I, but I will add my .02 anyways.
I think you and your family will find the
Disneyland Hotel more enjoyable. The atmosphere is more 'Disney' and the rooms are bigger.
As far as concierge...we haven't tried it yet, but we will for the first time in May. We usually like concierge because our kids take full advantage of the 'finger foods'
Since the Grand Californian is connected to DCA, I would think that this hotel would be for someone who plans on spending more time at DCA than Disneyland. And since DCA seems to be slotted for older kids and grown ups, I imagine you'll be spending more time at DL (you mentioned her DD not liking the 'thrill rides').
Who's next? And who can say this better? I've been sick for 4 days and my brain is in a fog...LOL
<font color=green size=3>Boise DIS Meet,
March 17th 2:00pm
Red Robin, on Parkcenter Blvd.</font>
<font color=red size=4>HAVE A DISNEY DAY</font>
<font color=navy size=3>M-I-C...see you at The DIS Convention, K-E-Y...why? Because we LOVE Disney, M-O-U-S-Eeee...</font>