So many things affect road noise, which makes it difficult to fix. There’s the road surface itself, the tyres, and the noise insulation in the vehicle. The Honda CR-V might well be quieter, but could still be noisy on the roads you drive on. If the road noise is the thing that is making you switch vehicles, then it might be worth talking to a tyre dealer about a tyre that might be quieter than the ones on your Kluger. If you want to go down that road, you could try a Mazda CX-5 or CX-7, a Kia Sorento or Sportage, Toyota RAV4.

There doesn’t appear to be anything in your regular driving routine that is out of the ordinary, nothing that would demand more frequent oil changes. I would question the advice you have been given by the dealer and Honda, and I would ask that the oil monitoring system be checked to see that it isn’t giving false readings.

Yes, provided you drive to the conditions. This answer assumes the Honda CR-V in question has good tyres, has been serviced (including having wheel alignments), and is driven with care. The all-wheel-drive (AWD) models will be vastly more suited to driving in snow (or sand, mud and dirt) than two-wheel-drive models which only power the front wheels.