Go for it, even if you are too old, could be attacked by marauding raccoons, may need a blood transfusion due to mosquitos, have to find chiropractor for a sore back, and needing a fungicide for athlete's foot.
It will make a hell of a story
You have to be careful about those scuzzy showers! If the kitchens in Portugal are as clean as their bathrooms you will never have to worry about the food.
Showers do not need to be fancy to be clean, or welcome.
Camping and "roughing it" are not synonymous.
Even in North America, it is pretty nice most of the time. Ages on this trip: 31, 49, 61, 73.