Strangers in My Babies' Life

My daughter has started going thru a phrase. Whenever someone new, or someone that she has not seen in a while, picks her up, she screams and cries. For the most part, I am fine with this - I don't want her getting to comfortable with strangers. The issue is that she also does it when someone that she hasn't seen in a week or so does it, i.e. her grandparents.

My husband's parents live 7 minutes from us but we don't see them that much. His mother does watch the babies on Wednesdays but due to some unfortunate circumstances she has not has been able to watch them the last 2 Wednesdays. We had dinner last night with his parents and the babies saw them but not too much of them. Today, we took the babies over to their house for a visit and when her grandfather picked her up, my daughter had the biggest crying fit...twice.

This is an issue that I did not want to happen and am very sad that it has occurred. Basically, my babies' grandparents have not visited in quite some time. Given that we have twins, it can be very difficult to take them someplace for a visit so we don't leave the house that often. We have to get them dressed, put them in their car seats, pack a diaper bag with diapers/burp cloths/bottles/pacifiers, get them into the car. When we get where we are going, we "unpack everything", visit, then get to "repack" and come home just to "unpack/unload". Now, for the grandparents to visit the babies, they have to get their car keys and come over.

That is what I wish they wanted to do, just come over and see the babies. I don't want to have to explain to my children why their grandparents live 7 minutes away but they never see them. I don't want my daughter cry whenever they pick her up.