Buddhists do anniversary or individual memorial services all the time, but either they are big general things like Equinoxal or mid-Summer memorial services in which anyone may participate, or private services done as part of a regular service, where, again, anyone may participate on behalf of any decedent; or just privately, at home. Private anniversary-type exclusive memorial services can often be set up whenever one likes, but are not common. Some temples have regularly scheduled memorial services separate from other services, but those are also open to anyone who wants their decedent to be so remembered. Buddhist memorial services are not sad or solemn, generally, and tend to be fun, leaving people feeling good, happy, and connected to their deceased loved ones. Food after is entirely optional.
I go if the Prof wants me to, and he for me, to a first (following the death, formal and exclusive) memorial service if possible, but in fact, because of the way we do things, I will almost certainly be at subsequent ones, anyway.