Omnitik 24 as access point. Dual or single chain?

Ive got an rv park im about to upgrade. I bought 3 omnitiks with some high gain antennas. Since the park will be a mix of laptops, phones etc would I be better off using a single chain or a dual setup? We dont need n speeds as the park only jas 10 megs coming in, but I want the best setup for range and dozens of users per ap. Ive read that one single chain user can mess up the whole system when ap is dual. Any thoughts to this?

Omnitik is 5GHz only. Are you sure you want to use it as ap for mobiles?

I have never seen problem between single channel client and dual channel ap. What exactly are you afraid of?

Something in very wrong here.

Oops I meant netbox 24. But same question applies.