After action report:
After getting a little more serious about scouting for oil, it turns out I had enough macaroons so that I didn't need to spend cores to fill out both donation meters. In fact, I had enough to trade for a Pvt. Oliver as well.
I stopped doing any of the wine/cheese attack lines at all when it became obvious I'd never have any spare baguettes or meat to spend on exchange items. Granted, this realization came rather late, but at least they didn't cost me anything but time. At least as I said before, there's nothing in the exchange shop that I just HAD to have, but it sucked for those of you who don't already have Amelie.
All in all, not a bad event. It did require spreading out play time over the full time of each reset to avoid repair costs, but it was entirely possible to get lucky breaks on tiles 5/6 and have a zero casualty run (tile 5 on both lines had zero casualties this time, which explains why I'm done early). Event girls are hot (though Louise's eyebrows are a little off-putting) and their stories are cute (4/5 on Louise at the moment). But can we please get some Medium event tanks in the future? I'm already overstocked on them so that I can't field all of them at the same time, but some of mine are getting close to lvl 50 and I'd like to rotate some new ones in when they get there, especially when just grinding easy XP.