That instant refund is a rip off for sure. It doesn't take long to get your refund if you file electronically.
Last year was the first year I ever filed electronically. (I'm just stodgy enough to not do much financial stuff of any kind online if I can help it. Silly I know.) I was shocked at how quickly I got my refund. I think it was less than two weeks. State refund was just as quick, too.