Nowadays hard to get really cold day. Even in Cameron, lowest I had in recent years were 10c earlier this year.

Yea. But on more closed spot dominated by riders.
Really strong wind is frequent, but storm like one during my visit this time is rare.
In that wind flysheet wouldn't survive unless you meticulously peg with very precise angle on 30cm rock peg.
Unless you are using semi geodesic, ccp slop big family tents would have collapsed, poles break if unlucky.
Any half decent dome tents wont have problem as long you deploy guylines instead of just base anchor.

No. Tempting to do I know. You won't detect it but the 'protein' smell might linger and may attract bears when I camp in forest later.

Public toilet is like 5 min ride away.
No take bath. Deodorant is enough. Only 3 days. Not sweating that much plus just solo and straight back home after.

Thats the part of experience wei. Sometimes you just want to let your primal inside to manifest