I emailed. Here's what I got (see below). I'm pretty impressed, they seem very organized so hopefully everything will be ok. I wasn't in the system yet, but who knows what date my BF actually dropped the papers in the mail. I'll keep everyone updated.

"Thank you for contacting Garmin International. It takes approximately 30
days for our rebate center to receive a submission and load it into our
database. Once it is in our database, customers can check their status
on our website at www.status-now.com

Please allow 8-12 weeks to receive the rebate check, per the rebate
coupon.

If you cannot locate your status on the above website and you know that
it has been more than 30 days since you mailed in your paperwork, then
please use the following link to check your status.

http://www.rebatetrack.com/quick/track/garmin"