Pesach is definitely wine season in Israel and there are lots of wine events going on during the weekends leading up to the holiday.
I'm doing my best to post them all on my calendar of wine events, though I'm sure I'm missing some. Anyway, have a look at the calendar to see what's going on: ydwineinfo.wix.com/events
Check back from time to time; I'm adding events as I hear about them and as time allows (day jobs can be such a nuisance).