You said "have narrowed search." Does that mean you eliminated some very fine Fuji cameras, which you have a basic understanding of its philosophy of cameras with your point-and-shoot? How about Pentax? It has the K70 or KP, both of which are weather sealed whereas the D5600 is not, and it has a faster shutter speed and other features that are just as good if not better. It's ok to consider something other than Nikon.

You cannot extrapolate anything from the ad. The next edition might not have ANY cameras or maybe the number might get reversed, 30 Nikons and 12 Canons with a few Sony and Pentax thrown in.

With the holidays depleting the stock of camera companies, keep the following link bookmarked and check it often. It is the link for Canon refurbished lenses. Many of us on UHH buy refurbished and Canon, in my opinion, offers the best bang for your buck because you'll get a one-year warranty on ANYTHING marked refurbished. Some have suggested the 10-18 lens but, unfortunately, it is out of stock in the refurbished ones. That's why you should bookmark it and keep checking back often. However, the difference in cost between refurbished and new is only $60. Here are the links:

All current refurbished lenses:
https://shop.usa.canon.com/shop/en/catalog/refurbished-lenses?gclid=Cj0KCQiA_qD_BRDiARIsANjZ2LCiJw-552rwBoAbac1R6JQVnX_uGnvfBZNJH1h7KGTs_XkbXOd9DKwaAlbmEALw_wcB&gclsrc=aw.ds#facet:&productBeginIndex:0&orderBy:11&pageView:grid&pageSize:&

New 10-18mm (IN STOCK):
https://shop.usa.canon.com/shop/en/catalog/ef-s-10-18mm-f-45-56-is-stm

You'll almost always get more of what you want by selling it privately to an individual. Retail will ALWAYS offer a lower figure than what you want or think something is worth. They're in business to make a profit, you know that. Look for local camera clubs or someone you know to get more of what it's worth to you.

Yes, I currently have one that was bought refurbished from Canon. I love the ease of taking photos and the 1200mm equivalent lens is great for moon shots or anything of distance away. It's a great camera.

For additional lenses, try Canon refurbished lenses. These have been re-conditioned by Canon technicians to like new and come with a one-year warranty. Can't beat it and MANY photographers here on UHH buy this way.
https://shop.usa.canon.com/shop/en/catalog/refurbished-lenses?gclid=CjwKCAiA8Jf-BRB-EiwAWDtEGpy4IXzKtQqs8--N7CYubFEbigpjRcxE4OpgS6h_seLJi4cLcLEJkRoCcUkQAvD_BwE&gclsrc=aw.ds#facet:&productBeginIndex:0&orderBy:11&pageView:grid&pageSize:&

For great, FREE online instruction, go to this website: https://www.cambridgeincolour.com
Click on the 3-line menu button at the top right corner, then click on tutorials. There's enough info there to guide her from the basics to advanced, almost like being in college.

Here is a review of the xsi when it was introduced:

https://www.imaging-resource.com/PRODS/XSI/XSIA4.HTM

Psst! What I'm about to say, let's keep it to ourselves because I want ALL of our favorite camera companies to thrive. I've been noticing a LOT of sites where cellphone photos are posted and an overwhelming number of them have been taken with the phone held vertically, not all, but a lot. So if these people amazingly discover that holding the phone horizontally gives them a truly awesome photo of that gorgeous sunset or some other wide shot, we are doomed.

Tony, feel safe by accepting the testimonies of fellow Hoggers and by checking out this website:
https://www.sitelock.com/blog/is-this-website-safe/

As some others have suggested, there are some excellent point and shoot cameras out there which can bring excellent results while being much less cumbersome for you.

Try the D5600. Comparing it with your D7100, Nikon says that with the battery and card, the D7100 is 765g and the D5600 is 465g. That's close to a pound of weight which can be significant to the photographer. Now compare the two and see what you would gain or lose.

https://cameradecision.com/compare/Nikon-D5600-vs-Nikon-D7100

See if any of these might work:
https://improvevideostudio.com/top-5-lightest-dslr-cameras-in-2020/

Try this link:
https://handandarrow.com/what-photography-gear-should-i-bring-to-iceland/
You might also research National Geographic photographers.

Thanks.

Did anyone on UHH capture photos of Mars last night? If so, what settings did you use? I'm asking as a means of learning. I have a Canon sx540 bridge that has an equivalent 1200mm reach but just not sure what to use for fstop and shutter speed. I also have a tripod to help with stability. Thanks for your input.