Yes... a Darth Vader suit walking around in a Mall would be ideal... I dont imagine you would have to make a purchase... a mere wave of the hand and a threatened force choke would get any dark lord what he desires in a shopping centre!!!
Would someone really call the cops if the saw a storm trooper on a lawn? If so, that makes the prospect all the more enticing... Imagine the conversation...
Cop - "um, hello there, what are you doing?"
Stormtrooper - "I am just enjoying a few beers before I have to go to fight the rebel alliance, those damn upity Jedi will be the death of us all"
Cop - "right - you cant do that in your own home?"
Stormtrooper - " you obviously haven't been stationed on a star destroyer for months on end... I know they are big an all... but the claustrophobia is intense... cant a clone enjoy a little sunshine and beer in his garden before embarking on an outerspace mission"
Cop - "No, your are freaking out the neighbors... go play Jedi inside!"
BAM!!!