Malcs - yep, they'd be pretty much flat out. However, a parkrun the day before a marathon is much more risky, typically that will be run as a dress rehearsal for the first 5k the next day, maybe around 20 mins, anything faster and I find you can pay dearly in the closing stages the next day.
Smig - Sounds spot on, all you're trying to do now is keep blood flowing on a regular basis, training is now done so relax and enjoy some slow runs
Emmatron - Sounds like you're feeling fit and ready.
Smig - There are no hard and fast rules about the week before, some people run good marathons off pretty much resting the weekend before, others like to have a proper blast over a shorter distance, ie 5-10k, and yet others can run a good marathon off running a marathon the week before.
Really it comes down to how the training in the last few weeks compares to what you've done before - if it has been a journey into new territory in terms of workload then keep between now and race day to short easy runs and let your muscles regain full strength to give yourself the best chance.
Personally, it will be a parkrun and a 10 mile race on Saturday, Sunday is not yet decided but probably nothing strenuous.
Malcs - That is probably the question we get asked most often and the answer is a categoric no, never. We never run together, which might seem a bit odd considering that we have finished 3 marathons this year within a minute of each other and the other four within 2-3 minutes! We're far too anti-social for this running together lark
The other bit of advice for this particular race if you're feeling up for sub 3 on the day is simply switch off and follow the mohican! Njord from the Sub 3 thread is on pacing duty and you can take my word for it that he will get you there in the most economical way possible - you won't find a more experienced or better pacer anywhere.