kwik-silvaKitsondinho I usually use the metro and will be again on Saturday. It is absolutely mental (unless you arrive stupidly early) For that reason I have previously got off at Trafford Bar and walked the rest. If you fancy a quieter tram but a longer walk, get the Eccles tram to Pomona or Exchange Quay. The walk is about 15-20 mins, but you are less likely to be squashed into the tram beforehand!!
Second the Exchange Quay idea, it's not that far and much easier
What about coming back... would you just do the same, walk from ground to Trafford Bar or Pomona? I'd assume they'd be really busy as thousands would be heading back into town in that direction.
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I'm not far from Manchester Victoria train station so I may get the metro train from there to Trafford Bar