My only comment on the switch-a-roo is really that it's great that they could fit us in and apprieciate you going into bat for the group Glen since that would have been quite difficult otherwise.
I wonder is an 11a start too late? I don't know when esky starts service, and 11 seems reasonable, but if the TT is picking us up at 12:30.. just thinking about the time it took for us last year to all get food and eat it (and no, this is not about my forgotten burger! LOL

)... I wonder if that's enough time? Given there will be more of us this year (yay!) than last that could also be a factor for esky. Might be worth having a word with them ASAP about that.
It is a good idea though to get a menu of options out before the event so we can pre-order (we've done this at christmas dos in the past) so you know what you will get, and they know too so can plan, and will give us less time to worry about that stuff and get on with the food and drink.
Now why did I book that 0800 up to SYD? lol. I guess it will be brekky in the QP!