Hi OP pleased the loungewear pic made you laugh!
I see you asked about why some people don't like baby showers. These are my personal reasons please do not take offence as none is intended;
I feel it is unseemly/grabby/vulgar etc to have an event where the sole intention is to receive gifts. Baby shower is solely to shower the baby in gifts. Birthdays, Anniversaries, Christmas etc all the emphasis is on celebrating with friends, family and so on with the added side benefit of gifts.
It's an American tradition that somehow has made it's way over here, probably due to the Kardashians et al. It isn't in my culture to celebrate like this.
It generates greed, excess and needless consumerism.
Some may consider it bad luck to celebrate the baby before he/she is born as there is still the potential for an unfortunate outcome. Superstition, tempting fate and the like.
Having said that I think having a meal with family as you have said you are having (minus a gift request list) is a nice thing to do.
When I hear baby shower I'm thinking am over the top venue, special outfits, games about babies, all eyes on the new mum, it being all about opening gifts just a bit tasteless and "oo look at me I'm having a baby, aren't I fantastic, bring me gifts for my womb holds life" when people have managed to have children for years without all this over the top business. By all means celebrate the imminent arrival because it is exciting, however it's when the expectation of gifts comes into it that I feel a bit queasy. People may well choose to bring gifts but never should it be expected or dictated. Think of it like this, it's your baby to raise, nurture and provide for - you don't give everyone else a shopping list of things you need to do it.
As for location I'm in the South East. I have a decent size circle of friends aged from mid 20s to late 40s and I have only been invited to one baby shower (and she was more an acquaintance than friend) and I declined the invitation as I found I had a prior engagement that day for the reasons above.
And ffs I've just seen how much I've written sorry everyone, never knew I had so much to say about baby showers 