I've had frequent uti's and whenever I drink alcohol, I notice my bladder starts to hurt for a while as it would during a uti. What's that about?

Bladder irritant. Alcohol is a bladder irritant for some people so when they drink it the bladder hurts. Other bladder irritants include caffeine, acidic foods and pop. Avoid those irritants and drink more water. Taking in more water can reduce bladder infections.
Bladder irritation. Seems like your have bladder irritation (Interstitial cystitis). Alcohol, caffeine, artificial colors, sweeteners are know bladder irritants. In your case, prevention would be the best treatment. Don't ever forget to listen to your body! Taking vitamin D3 daily helps to reduce inflammation.