Delivery split up into 2 shipments

Location: US

I ordered a Gaming Laptop and a "chill pad", I remember when I was ordering the computer I read that someone had to be there to sign for the computer. I totally understand that however I have an estimated delivery time of the 3rd week of August for my computer. I planned ahead to take off of work for that, but I just noticed that the "chill pad" was shipped separately and will is at the fed ex office now and has a scheduled delivery for tomorrow. The fed ex delivery estimate is "by 4:30pm". My question is will FedEx just leave the "chill pad" at my door as no one will be home tomorrow. And I don't see the logic in wasting a day off from work to wait for a $55.00 accessory.

Can anyone shed some light on this for me?

Thanks,

Also one more question:

How does the "chill pad" being shipped almost 20 days  prior to my computer being shipped play into the return period. If for some unforeseeable reason I get my computer it's a dud or what not that I return (again I hope this does not happen but from reading the forums there are a lot of unhappy people, WHICH I pray I will not be)  Will I be stuck with a "chill pad" because it's 21 day return window will be expired by the time I get my computer?

Thanks again any knowledge is appreciated.