Hi bambi I'm so sorry i didn't see your message earlier. As jezby and your clinic said, it's about two to three days is best.
Your clinic will let you know a good few days in advance when your ec is. First time round I was told on the Friday for a Wednesday op and second time was the Monday for a Thursday op, so try not to worry too much about the timings. Glad you're finding it OK though. After my first failed, I did what you said above, hit the cocktails, food, caffeine etc was bliss after months of nothing.
How are you feeling jezby? Huge hugs xx