If your temporary work location is expected to be 1 year or less, your employer can reimburse your meals tax-free (up to the limits). Ask your employer if they will be doing that (and STRONGLY advise them to do so if they weren't planning on it, as it will save both you AND the employer money). It would be tax-free on your paychecks, so nothing special will happen when you file your tax return.
If at any point the expectation becomes that you will be there for more than 1 year, it is at that point time that it starts becoming taxable.
