This has happened to me twice now and I wondered if it had happened to anyone else - and if you have any ideas:
When I found all 50 Mickeys I got the message that said "Click here" blah blah blah .... only it didn't work. There was no link. I filled out the online help form and never heard back from them. The message was, of course, deleted. No tour for me. Sigh.
It happened again today when I finally managed to win the fireworks game. No link. I hear I'm just missing out on a wristband that is just like the ones you get for completing in-park quests but I'm still bummed.
Probably should just be a grown up and get over it....