On your suggestion, I called Princess and they said that what the coupon book said about my excursions really didn't mean anything. The proper tickets would be in my cabin on sail-day. I didn't ask how late I could change anything, but I got the feeling it was pretty late. I have fretted over the excursions enough and don't plan to change any (now), but I'm glad that the ones I picked 6 weeks ago were exchangable: I've learned so much from all of you! This is such a great forum.