What do you think?

So my husband and I have have a trip planned in May for 5 days. Our son will be 9.5 month old then. Right now he’s 7 month and I am starting to see that he’s getting attached to us. I’m not sure if it’s the beginning of separation anxiety. At home if he sees me, he’ll want me to hold him but if I just walk away or do something else, he’s fine and just go back to hanging out with his dad or playing with his toys. I can leave the house and he’s fine with my husband. But every sunday we take him to my parents and now when we’re there he’s always trying to stay by one of us, I believe because he doesn’t want us to leave him. There will be some sundays where we would let him stay the night if our babysitter can’t make it that Monday. He would cry at first but then after he goes to sleep and wake up the next day he’s fine. But we’re thinking about canceling the trip in May as it might be hard for us to leave him for that long and I’m afraid it might be hard on him too not seeing us for 5 days. What are your thoughts? Is it bad to leave him this long is he’s attached or it’s a good practice to have him around other people ?