My friend has a birthday coming up and I want to send a birthday treat to the office for the birthday person and co-workers. I want it to be a surprise. However, I have never been invited to the person's place of work and I don't want to intrude. I originally had it set up to where the bakery was supposed to deliver it, which I thought was probably ok, but then the bakery told me they couldn't deliver because of some issues they're having, so I'll have to take it down. The items are special-ordered and prepaid, so I can't cancel. My current plan is to try to slide in all ninja-like and not get noticed or bother the person at all- just leave it at the front desk.
Is that socially acceptable, super nice, or intrusive?