The scene where Major Sheppard cloaks the jumper and says "All right, let's remember where we parked!" is borrowed from Star Trek IV: The Voyage Home (1986) when Kirk, cloaking the Klingon spaceship, says "Everybody remember where we parked."
The energy lifeforms are extremely similar to those previously featured in Stargate SG-1 (1997)'s Prodigy (2001).
The reason they don't park closer to the Wraith ship is concern over a defense system, yet they approach the ship on foot without caution.