Honestly, don't worry about it. Just do it. If you don't things will only progressively get worse. I would vote for the 3 weeks instead of 10 days. Swallowing, talking, anything involving the throat will be painful for a while. It's just part of how they do the surgery.
Stock up on sugar-free jello and pudding and stuff that goes down easy. I didn't have any problems reaching above my head though I moved a bit more slowly.