Another Wedding

Off this evening to a wedding reception being held at Hertford House, Manchester Square W1. The wedding took place earlier today - the groom is in his 40s and the bride is I understand 25. Is a difference of about 20 years a good basis for a marriage, for nuptial bliss in the long term? It could work I suppose but when the bride is 60 and the groom in his eighties will he have the necessary oomph to keep her smiling or will she need to take her pleasure elsewhere? Will he mind? Something for the happy couple to find out but every marriage that I have observed where there has been a similar age gap, even where there have been children of the union, have come to a sticky end. Is that a reason though for not getting married and having children since so many marriages where the couple are of roughly equal age fold anyway. I just like a party and seeing old friends and of course a glass or three of champagne - hope it's a good one. Apparently we are going on afterwards to a restaurant near King's Cross but are there any restaurants near King's Cross worth going to? I am always open to being pleasantly surprised but remain dubious.