You might be surprised. My neighbours had 20 blooms this year, but missed seeing them flower 🤨. I had seen many bats flitting nearby, presumably enticed by the plants somehow. Bats are often quick and flitty, so you may mistake them for a blink or not notice them at all.
Yeah, unfortunately nobody else in my neighborhood has cereus plants blooming at the same time. Guessing they need cross-pollination, as there’s never been any seed formation. We have a tons of insect eating bats in my neighborhood, not sure about flower lappers.
I wish I knew about their life cycle. I hope you, your neighbours and bats come together and agree a plan of action for next year 😊. You are so lucky to have so many bats! Cereus! and insects! Bonne Chance x