If I had to guess, the wine is the culprit, and not necessarily because of the alcohol. Unless you have an unfortunate history with alcohol, it sounds like you are a controlled imbiber, not someone who gets a snootful three or four times a month....correct? So, it still may be the alcohol, but red wine as we get older is often a no-no. It is full of tannins and histamines, both of which can cause sympathetic nervous system responses...meaning 'arousal' with more cortisol and more epinephrine production by the adrenal glands. In turn, this suppresses the Vagus nerve which is the 'spine' of the parasympathetic nervous system that regulates heart rate when at rest and when calm.
We live in different bodies, but many in my extended family, we aged siblings, and my parents, found they couldn't enjoy a decent evening after eating a meal with red wine. I get horrible indigestion, burning belches, until 0200 in the morning. Even if you manage to fall asleep because little of what I experience is what you experience after red wine, your stomach might have something else to say about it while you are unconscious.
There are members here who have learned, the hard way, that they simply can no longer tolerate certain regimens, drugs, chemicals, states of health, and so on. For example, lindy responds frequently to newcomers who ask questions about why they keep getting AF (atrial fibrillation) that she can't have any caffeine, and she makes no bones about stopping ingestion of any caffeine to see if the AF subsides...which it does in some people.
One other possibility is that your system is low in magnesium. Most N. Americans don't ingest enough magnesium in their diet, and they should supplement. I'm not suggesting that you are in this boat, but you COULD be. People with low magnesium often develop temporary arrhythmias. Your physician might agree to run an RBC test for magnesium for you to see if you're circling the drain too closely. If it turns out that you are low on MG, it's almost universally easily corrected with supplementation, but again you would follow any prescription given by your doctor.