You get to work. Priority one is the shield, which protects from a range of evils. You get the power generator set up, and get the shield hooked into it, but that takes some time. Neither of you are very technical, so you take your time and work through the process carefully. Half an hour later, the bubble is up. However, it's far too small to cover the shuttle. It'll keep a smallish area safe, about 10m in diameter.
The envirotent is next, and that goes much easier that the shield. Your gear is unpacked, and you've done a quick scan. It turns out the atmosphere is breathable, and within the shield, radiation levels are nominal. Outside the shield, you're probably safe for an hour, but much longer than that and you're looking at radiation poisoning.