We were glad to have had our hardtail mountain bikes yesterday, rather than our gravel (cyclocross) bikes, mainly for the comfort of the front suspension. The other bikes would have managed the track, but they are new .... and we didn't know what to expect! If you have to get off for short sections of rough track there's nothing wrong with that! Your hybrid bikes will probably be OK.
Edit reply to @bellabee the quote disappeared!
Edit reply to @bellabee the quote disappeared!