Thanks all for the support.
Got busy there after posting as there were some issues with one of the other wine makers at the winery and emotional support and a sympathetic ear were needed for my DP. All back to 'normal' now.
Between reading your comments and met with the wife of the head winemaker I am feeling better about the whole thing. I gather 7 days/nights a week is very unusual and is just because of the freakish weather we have had (hail in August! and it was at least 28 degrees on the ground. Decimated some of the vineyards.) He should be back to 6 nights a week shortly and then after the main harvest (sometime in September) he will go down to 5 nights a week (though still 12 hour shifts). In comparison, the future is looking positively brilliant for time together during a harvest. 
Hi GentleOtter and freerangelady - Neither of us know anyone here, so we are very reliant on each other. The town we have moved to is very friendly, but my Spanish is only really good enough to basically chat, not have a conversation, so I am afraid making friends is going to have to wait really until my Spanish improves (which is daily). The harvest lasts until mid-November as it is such a large winery, so a 12 hour shift is the norm until the wine making ends. Because he is a wine maker, it is only partly about the grapes coming in (that is what generates the 7 nights a week), but after it is about making the wine and seeing it through the whole process until all is bottled and being sent out for distribution. The offside of this, is he is done by mid-November. And then we move on to another vintage harvest...
This will be the hardest harvest we have to get through, as there are a number of factors, language at the top, but also his working nights. I thought about trying to match his hours, but the shops are only open in the morning, so not really possible. Also with the heat of the day, that would truly be a waste of what little comfortable time there is to be outdoors. I truly understand why they siesta here now! At least after this one, it should get easier. And having he knowledge that it will ease off after a fashion, has really helped make things a bit easier to deal with. It was thinking that this was how it was going to be until November that was killing me.