I'm from the other side of the world - how was I to know 
That doesn't sound very nice of them. Glad you weren't late!Last year I had a breakfast ADR that morning and thought I had overslept. I raced into the restaurant (I thought an hour late) apologizing profusely. The CM looked at me like I was a complete moron and explained daylight savings to me like I was 6!
I did 3.5 miles yesterday and 9+ today. I was hoping the route I did today would get me to 10, but it didn't.I should have done another loop around a couple blocks to get up there. Something about 10 just would have sounded better! But oh well. The weather was so perfect today and I'm glad I got out there and at least did over 9.
I remember my sister telling me in 2013 when I was training for my first half that if you can run 10, you can run the half -- especially with the added excitement of race day!
This is going to be a "non-answer" answer. I think you know your body best. Have you done back-to-back long runs like that before? How are you feeling today (and tomorrow)? Do you really need the distance, or are you a veteran with a well established base? These are all the factors I would consider.
I remember my sister telling me in 2013 when I was training for my first half that if you can run 10, you can run the half -- especially with the added excitement of race day!
Being Type A, I didn't want to take that chance. Ran all the way up to 13 before to MAKE SURE I could do it. Since then, we go up to 12 max -- it'll be 10 this time, I think, unless we decide to go further today. I'm not worried, though!
I wouldn't but that's me. I have read that anything less than 10 days before won't benefit you, so that 10 may do more harm than good. Friday I plan on 7-8 for my long run. As others said you know yourself best and how quick you recover.
Not too long, 10 minutes maybe depending on if you wait to do your medal picture with photo pass. They move people through fast it seems so areas don't clog up. They may have characters/backdrops out after too so you may want to do those. The longest part will be waiting for a bus back to your resort. An hour to me seems about right I suppose.
People certainly do either or these things -- really just a preference, I think. I have a thin jacket that I run in when it's a little colder out. I wear it while in the corrals (I'm always in shorts and tshirt) then tie it around my waist for the race. Now I know that wouldn't work for some who care about costumes and such, but that is not me!
