Below are links to review of our last trip to GRSP (2 parts due to length). Bit old but you may find it of some help. I've changed my review format since this one was written but haven't been back to that park for an update. Plan is for us to go there next spring.
Shade varies a good bit depending on which site you have. Sites are spaced pretty good, giving fair privacy.
I'm almost positive I have pix of the park and would be pleased to send some along if you can PM with an e-mail addy.
Guadalupe River SP, Spring, 2004 (Part 1 of 2)
Guadalupe River SP, Spring, 2004 (Part 2 of 2)
Hope all this helps and you have a great trip.
Happy Camping!
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Turn Key, DW and Pepsi & Cherry, The Camping Boston Terriers
'03 Chevy 2500HD, 4X4, X-Cab, Long Bed
'04 K-Z "Durango", 275RK ("Sunday Haus II")
Twin Kayaks, "The Ride" by Wilderness Systems
North Central Texas, Where The West Begins!