This sounds ridiculous, but I always feel bad for the family when a person goes at 99 because most have a huge party for the person at 100. My great aunt turned 99 in January and we are planning a big bash for her in January 2015….however the plans must be very liquid.
It’s not ridiculous. Have a party now, then you can have another party on the big day. There are no rules that I know of forbidding having more than one party. There may be some travel for some folks, but that is not as important as having a good bash.