Money withdrawn to pay for school expenses, list provided elsewhere in this thread and on the IRS website and, I think in a pop-up window in TurboTax, is NOT taxable. That's the whole point of funding a 529 for your Little Treasure. Therefore, if you withdrew funds from your 529 to pay for tuition, books, room, board, etc. -- really, things that most people would consider school expenses (but check the list just in case) -- then you didn't have a taxable event, and the IRS does NOT care, so do NOT tell them. Delete the 1099-Q from your TurboTax return, e-file, and get that refund.
Now, if you used 529 funds to fund your gap year cruise, that's not really a school-related expense, so it's income, and now you're stuck waiting on that refund, except there shouldn't be such a great refund, should there, what with all that extra taxable income? But from what you have said, previously, unless I'm confusing you with somebody else with the same issue and question, you are a humble grad student spending 529 money as the IRS intended, not a cruiser and a playa, as the Youth of Today are wont to say. In which case, relax, delete the 1099-Q, e-file, relax again, get your refund, and relax one more time.
Best of luck in your studies and post-graduation adventures.
