Has anyone ordered something from petsmart.com using economy ground shipping?

I think I made a big mistake. Late last night I ordered an air travel crate for my dog on petsmart.com. I need it because my dog has to travel with me under the plane because we're moving out of state. The problem is I opted for the free shipping which is economy ground. I just realized that it takes 6-10 BUSINESS days to get here. I thought it was just 6-10 DAYS, weekends included.

My flight is Wednesday, May 21, which is only 8 business days away. I'm really worried I won't get it on time! I tried to upgrade to a quicker shipping but they told me it's too late, they also don't do cancellations. What should I do, I'm super worried it won't get here on time, does it usually take only 6 days??!! If anyone has placed an order from petsmart before or just anywhere else using economy ground shipping, how long did it take?? Please help!! Thanks!