I would definitely go away for a short break, we often pick up special weekend offers, it's lovely to have a little change of scenery. We had a weekend away for our 40th, at a lovely country hotel, all paid for by DS and DD even our meals and wine. Maybe if we're lucky they'll do it again for our 50th in a couple of years 
Unexpected opportunity to have a few days break next week and would love some recommendations
Lack of Carer's courtesy while in your property


). It doesn't have to be on the day itself though, does it? Some of ours are weeks either side of the date, just so that we can all make it. I certainly wouldn't hold it against any of my lot if they had other plans on a particular date - we all have busy lives. Why not just do whatever you want with your OH on the date itself and celebrate with them when you all get back?