Things I get from your post.
You're driving your wife around when she is too drunk to take herself.
You're still footing the bill for these expensive restaurants when your finances are not great?
You're still buying her champagne?
Sorry if I have that wrong, but I remember saying in previous posts that you pay for everything. He that is the case, of course she is unrelenting. Why would she change?
You have every right to go your dinner. If she wants to go, just say no. It's your dinner.