Google maps can help you. What you can do is input your hotel address , easily found on google, then put in one of the hotel addresses that has a shuttle stop. Bam. You can do that yourself, right? You know, instead of making someone else spend their time doing the research for you...
Oh. Okay. I totally understand. I just thought this was something a human being who has had Coachella shuttle experience (as opposed to a computer) could help me out with, especially regarding the part where I ask if I could trade my shuttle pass for another. But thanks. Huge help.
EDIT: This is the website you are referring to where I can look up addresses and type em out one by one into a map thing, right?: www.google.com
while i totally agree and endorse the first response, I will help by saying the tennis garden is really your only option because i assume you are driving from your hotel to this new stop? The tennis garden is only place to offer parking of any kind.