Both AC's on one side....

Really depends on how other loads are wired. If the water heater, microwave, converter, and other loads are wired to the other hot leg, then the loads are already balanced even though both A/Cs are on one leg. If you are on 30 amp service it would not matter any way.

I just discovered yesterday that both of my ACs were on the same leg (see the recent thread on balancing loads) and I simply switched the second AC over to the second leg, which turns out to be the way my trailer was originally engineered to be. Someone at the factory made a mistake and swapped the breaker for the second AC with the electric element of the water heater. I had a 5500 watt generator, which necessitates a balanced load on the two legs or you’ll trip it’s breakers. You can get by perhaps with them both on one leg because you have a much bigger generator. Personally I don’t feel good about a radically imbalanced load and don’t see any compelling reason to have one. So I switched.

yes it should be on the other side
that way the panel load will be more balanced when you have 50amp shore power

for what you are doing with portable generator or 30 amp shore power campsite,
it won't make any difference , i would wait until after this trip

then move one to the other side