This checks out. The below plot is a rough shadow map of Batwing based on Nearmap shots. (North is up). The blue lines are taken at various times throughout the years but all are 10am or later in the day. The red line is the only one where the photo is taken prior - at approximately 8:30am
Batwing is approximately 60 metres high. The new hotel is proposed to be approximately 80. If someone wants to dust of their pythagoras books and work it out precisely go for it, but i'm gonna do some back of the napkin math and say the longest shadow is 150% of the tower height - so our 80 metre hotel shouldn't cast more than a 120m shadow:
I've guestimated the tower position but i'd say this is pretty spot on. In the early morning it might just kiss Road Runner, but the front entrance will still cop full sun. It's so perfect when you imagine the batwing lines replicated in the same fashion, it avoids almost every part of the "on-stage" park, i'm almost inclined to say this was their intention.