I have Accor Gold status and hope to make it to Platinum this year.
None of the Wellington properties offer Club floors or lounges. Sofitel is closed still (after being delayed by more than 12 months due to construction delays, they managed to have a fire in the kitchen within 6 months of opening which for some reason has meant almost a further 12 months of closure) but I stayed there twice before the fire and never saw or read of a lounge. Novotel certainly does not.
For some reason the Club Floor/Exec lounge option is rare here. I book it every time I travel to Asia – it is worth every penny – and I am in the Sofitel in Sydney for 5 days in September which has a very nice one too.