My recovery has to be non conditional, red.
Back in the day I went to a lot of festivals and got very drunk - they're not really my scene now but I've been to several in recovery and stayed stone cold sober.
It took me a while to relax and let my hair down sober but I go for the music and the catch up with people now, not to get wasted.
If nothing else you're going there with your step kids - not sure how old they are but I'm assuming they need a responsible adult - you can be that
Of course, bottom line is if this is too much too soon and you think you might break down and drink, not going needs to be one of your options.
D