I laughed a little too hard at this, because I just don’t love the beach. Felt like I should send it to my friends who are beach nuts, but looked down at my toast with honey I was eating and realized how much we enjoy things that are made by the excretion of other creatures.
Seriously, you have a bidet. Plop a small bottle of handsoap near the toilet and squirt a small bit on your wiping hand while the spray does it’s thing and you clean off using the soapy fingers. Let the bidet rinse your hands and asshole for a few more seconds. Keep a towel nearby for drying your hands and ass, that is replaced as you feel and serves only that purpose. If you do it right, no fecal matter will be on your hands when you dry and you can wash them again at the sink.
Toilet paper is just a waste.