Alcoholic parents, relationship with dd?

[Moomintime]

Hope this is appropriate forum. My parents have been alcoholics for at least 20 years, always drinking from 5pm, wine and often spirits too. they are also lovely people who've genuinely had hard lives and adore my dd. they never have the energy to do anything with her, but dd is getting attached to them (she is 3) as they do make the effort to come and see her. We live quite a way from them (deliberately) as it hurts me a lot to see them doing their usual thing. How much contact is appropriate? Any advice?

I would avoid the times of day you know they'll be drinking. At other times be prepared to leave as soon as the atmosphere changes (I think you'll know what I mean). I have this pre-arranged with my partner so there's no discussion, we just make our excuses and leave.

thanks Vivacia