Firstly, for the font issue, I assume that you probably have the Allow pages to choose their own fonts, instead of your selections above option checked in the font settings. This will allow the website to ignore your font settings and load its own font. Unchecking that option should use the fonts that you want.

As for the icon issue, this is because the icons are not saved in your bookmark backups or when the bookmarks are imported from Firefox Sync. They would increase the size of the backup and if you were to have a backup from years ago, the icon could be really outdated.

As you've already pointed out, Firefox does reload the icon the first time that you visit the bookmark. Naturally, it becomes a big task if you have a lot of bookmarks. I often recommend the Checkmark add-on to users looking to restore all of the icons. It will just open all of the bookmarks for you automatically to load the icon, so it's best to run it when it you are not using your computer.

Finally, with regards to the bookmark toolbar, check to see if the bookmarks were put into another folder or subfolder (often the Other Bookmarks folder). This happens sometimes when they are recovered from a backup or when they are imported from another browser.

Hope this helps.

- My bookmarks aren't showing on the Bookmarks toolbar--it's blank. (I imported them in HTML from another browser.) The toolbar is on, but no bookmarks. Anyone know why?

Does your Bookmarks Toolbar show the default item, "Getting Started"? If that isn't there either, you might go into the Customize mode and make sure that a placeholder titled "Bookmarks Toolbar Items" is at the left end of the bar. If that is not on the bar, you could check in the box of unused controls to see whether you can drag it back.

More info: Customize Firefox controls, buttons and toolbars

Wow, Wesley, you got all three--that's great! Thanks! The "Allow pages to choose" box was, in fact, checked--it's at the bottom of the dialog box, and I didn't scroll down far enough to see it. The Bookmarks Toolbar items were in a folder of that name in the regular bookmarks list. I cut and pasted them into the correct folder, and they magically appeared. And finally, that Checkmarks add-on seems to be doing the job. You hit the trifecta and retired the MVP (Most Valuable Poster) award for the night!

jscher, thanks to you too, but I didn't get that far, since Wesley's solutions worked.

Thanks again to both of you for your prompt and accurate responses!

Glad I was able to help :)