Since the weight and other specs appear to be from a previous model that was a little heavier than their current model of the Astral 2P, I assuming it to be a close-out model. If that's the case is Sunny Sports able to provide a Marmot warranty with this tent?
All Marmot products come with the manufacturer warranty, and you would need to follow their instructions for help with a warranty issue: https://warranty.marmot.com/.
Does the Astral 2p include a footprint and / or gear loft?
No footprint or loft gear included ... I think the footprint is available on this website as well though - great tent btw
What are the interior dimensions of this tent
The manufacturer does not measure the interior of the tent. The tent will be 39" height, 50" widthm and 88" length for the entire tent.