There's a bounty out for their arrest - the First Order doesn't rule here, not technically. Technically, this is New Republic space, or at least a forgotten corner of the galaxy the New Republic has decided to not allow other people to squat over.
Getting in's going to be a bit tough. Unkar doesn't have perfect control over everyone greedy enough to report them, nor over the storm troopers sent to 'observe.' They're claiming Rey and Sunn are escaped criminals from within Imperial space. But the First Order can't operate here for long, not without drawing far too much opposition for what was supposed to be a lightning raid over a vital target.
Anakin goes very, very calm, floating off into the Force.
Hiding them entirely versus planting false leads isn't ideal, but they're hoping to keep the matter of which city they're going to concealed - and Anakin doubts Kylo Ren is particularly inclined to let the Force guide him places.
The Falcon is ready for them when they arrive.