We don't use the AC on anchor, we find a breezy spot, or jump in for a swim and/or shower. There is little relief trying to sleep with a generator aboard a Beneteau.
Here in the SE US, marinas with 60 amp AC are everywhere and we tie up/plug in when the conditions are insufferable. Sailing is fundamentally about being outside in conditions. I want my crew acclimatized and capable of dealing with that. We talk about it and have fun with it. Minimal clothing and a little 'glisten" is part of the experience! Bienvenue. Vêtements est facultatif mlle! And when we finally tie up and plug it is wonderful!
Go through your electrical systems and you will find many places to decrease the load. eg: The freezer on our boat has a separate on/off control. We fill the freezer with food, top it off with ice/water jugs, freeze it solid at the dock, and let the refrigerator fan draw that cool for days - 125 Ah/day gone ! When you power up, turn the freezer back on and let it refreeze. Switch to LED lighting. Upgrade your alternator/charger, the OEM alt. is too small. Scrutinize your battery system, is it optimized, and in good shape? Turn off your radar when you don't need it.
Need more motivation? A capable generator install will cost you $20K and you will now have TWO diesels to fret over, and related ongoing maintenance. In my mind it only makes sense if you 1) have too many boat bucks in your wallet, or 2) are headed to the outback.