Re: WHO Clint lives there, so yes. XD He probably told Sam he was on his own with the over-the-top decorations but it was all lies and Clint did actually help. He also trailered the pony to some unspecified farm well away from Fourth of July fireworks and made sure the chickens were properly housed for the evening in the event the group goes next door to light the Steves' real candles. I mean fireworks.
He definitely brought a fire extinguisher out for the candles on the cake 99% as a joke.
Loki potentially came along with Thor as a dog again. IDK yet. If anyone particularly wants the puppers there, then there he will be!