DW here, ah sweetheart, firstly hopefully your Dad will be fit and on the plane before you know it, pixie dust in bucket fulls hun.
Wedding, if those around you are willing/able: share, share and share, get people helping you, delegate, that's why it's a wedding party! It will make them feel more involved with the day as well as take the pressure of yourself. On the day take a big breath, have a glass (or 2!) of bucks fiz and make sure you and your Groom have time together, not just at the alter or on the photos, enjoy yourselves. The weather your way looks like it will be cloudy but dry! You gotta love dry!
Saying all this my hubby and me went and got married in Orlando, just us 2, McDonalds for Breaky, Got married at a lovely chapel, lunch at la petite house of crepe (aka little house of pancakes!) back in those days (17 years ago,) we did a package with LunPoly, oh if only we had the lovley Dibb back then!
Enjoy your day hunni, the end result is BRILLIANT! You hear that Kingofhonour, BRILLIANT!