We, individually, may not be given the choice, but we can have opinions, and we have MPs we can contact with our view (if they hope for re-election next GE).
We must not accept any "deal" where we are obliged to conform to rules or rule changes created/modified by the other side without our agreement. Not can we accept any "deal" which seeks to split off NI from the rest of the UK. Otherwise we'd be fighting to correct an almighty mess for years to come.
If someone says that, "It's my way or the highway", then the highway (aka no-deal) is what it must be. Commerce has had two years to prepare, it's no good any company belly-aching at this late stage that their highly paid board and managers turned out to be useless, paid under false pretences possibly due to who they knew, and they can't cope with change.