Upvote:5
No, it does not affect your visa. B1/2 visas are issued based on individual eligibility and not as a group.
Plans change. Visa and immigration officers know that. You can use your visa for an entirely different trip at an entirely different time as long as the purpose of that trip is allowed under your visa category. It is extremely unlikely that this would even come up at the Point of Entry. Even if it does it has no bearing on your eligibility as a non-immigrant.