not a chance at marris house, the compound is the same as ricky road, with a smart card operated barrier for acess to cars. only ppl whose cars are registered (AND PAID) to be there can get in.
u cant even use someone elses card...i got a half an hour telling off and fine for doing this, and they check every single car that comes in against their records.
there is residential parking around ricky road / marris house area, but as it is so clopse to town, it is usualy busy...especialy on match days...and u have to pay. i think u can get visitor passes for over night but not 100% sure on that, and if friends or family are just dropping stuff off etc they will let u in during office hours.