It's still theoretically possible that the Lightning can finish as high as #4 in the East which, in turn, leaves a small chance that they would have home ice throughout the East depending, of course, on if they win their matchup(s) and how the other matchups fall.
It's far flung territory, and it's not important enough to risk injury before the playoffs begin (after all, TB did much better away than at home last year; go figure), but it is something to keep in mind. We'll know for sure about if they can finish above the Rangers (TB owns tiebreak) by the time this game starts; we'll also know for sure who the first round opponent will be, since Detroit is playing the Rangers, and the Bruins also play at the same time; both games being 12:30 ET starts.