lets say you made the bitcoin address
12c6DSiU4Rq3P4ZxziKxzrL5LmMBrzjrJX
you can easily go to
https://blockchain.info/address/12c6DSiU4Rq3P4ZxziKxzrL5LmMBrzjrJXand see the qr code on your tablet, show it to customers and then watch that page autoupdate when a payment is received.
you can also right click and print out that QR code and maybe laminate that qr code piece of paper and stick it on your cash register as a manual method of displaying to customers so that you do not have to hand them a tablet PC, (always having the QR code on display basically)
and then from the tablet thats always facing you or from a smart phone you hold, you simply use it to watch for payments.
yes it is that easy to accept bitcoin. the hardpart is deciding do you keep it for retirement investment, or cash out