FYI: I did this last year with about 2 weeks notice, staying on points for the last weekend of the event. I spent one night out near Munich airport at the Munich Airport Marriott and then using my diamond special services reservations at one of the Hiltons in the city centre. Even got availability to get myself from the UK to MUC and back using my star alliance airmiles (BD)

As such you may wish to check this out - it may not be too late for this year if you wished.