I arranged for a personalized menu and diver at CR for our 10th anniversary dinner in August. I e-mailed Nicholas 6 pictures of me, DH, and DS at various locations in Disney over the years (and wedding photos too). I made sure to e-mail him a week prior to our arrival to double check on the plans and was told we were all set.
My DH was completely unaware of my plans for the menu and diver. When we were seated at CR, I noticed that the CM was carrying extra menus and was able to ask her (out of DH's earshot) if these were the personalized ones. She whispered yes. Then she sat us on the third tier (the last), all the way in the back corner of the restaurant. We could barely see the tanks. I was puzzled by this. DH and I opened the menus and he was surprised, however, Nicholas picked the worst picture of all that were sent to him (he told me to send several for him to choose from). Yes, there was only one photo, not like the others I had heard about. OK, whatever, but the third tier?
I told DH I needed to use the restroom and found our waiter. I explained how puzzled I was by our seating arrangements as I had arranged for a diver. He was very concerned and said he would speak to another CM about this and get it all straightened out. He returned only to tell me that he could move us down by the tanks (not on top of them but at a booth on the first tier) but that "no one had any information about a diver being scheduled for us." Huh? I just confirmed it a week ago!
About 10 minutes later, we see the divers enter the tank. Long story short, we DID end up with a sign, DH was VERY surprised, and all worked out for the best, however it was a touch and go for a bit.
My advice is to check, double check and check again with your contact at CR before you leave to avoid disappointment!!!