I went to one many years ago in a CofE church. The couple had been married in their local registry office earlier in the morning (just them and their parents) and then had a church blessing later on. The groom was divorced and the vicar wouldn't perform a church wedding, but the bride had wanted a church wedding - so the vicar compromised with a church blessing.
To all intents and purposes, we attending their 'wedding' in the church and then went on to a traditional wedding reception. Dress code was normal wedding wear and, yes, we bought them a wedding present.
Ah. Did they elope? Or have a tiny registry office wedding which you didn't go to? TBH, it sounds a bit more like 'renewal of vows' in a church than an actual wedding blessing.
I think dress code wise, you're still better off going with traditional wedding outfits. But as for a present - then that would perplex me too, especially if I'd already given a present 6 years ago, in which case I think another present is unnecessary, although a card would be nice.
Have either of them become Christian since they married? I know some people who had secular weddings and then became Christian and wanted the marriage blessed? Or was it very small and now they want something bigger? Clothing wise I’d go for what you’d usually wear to a church wedding, but after 6 years I don’t think I’d give a gift?
BestThingsAreFree - are you the OP ? It's confusing, as your posts aren't highlighted as you've changed names (if you are).
Like others, I've been to a couple of blessings where the couple didn't get married (legally) in the Church, but it was the same week, and it was considered to be 'their wedding' - so wedding clothes, and yes to a present. I've not come across someone getting 'blessed' 6 years afterwards.
Generally speaking though, if someone invited you to a party of any kind, you take a present, so I'd say yes to that. If you bought them a wedding present first time round, then maybe more of a token present this time though.