if after the first couple times you get up to pee you start checking your watch because one of those times you are just going to stay up and get started.

if your hunting gear includes some combination of cholesterol meds, heart meds, pain killers, glasses, bi-focals, reading glasses.

if your landmarks are something like "up past where X, killed Y, back in 19XX"

if you recall when the plastic shot shell hulls were all the rage because they were waterproof.

BTW - I'm still using that 4x fixed-power scope too.