If many sites are closed on the 24th (either due to the upcoming holiday, or simply because it is a Monday), should we plan to visit the Vatican then? My worry is that the 24th, as Christmas Eve, will draw a bigger crowd than a day like the 21st or 22nd. Of course, how does a "big crowd" on the 24th compare to a typical day in the summer months? Perhaps my worry is overblown.
If we visit the Vatican on the 21st, 22nd, or 23rd, will there be enough sites (museums, Pantheon, Forum, etc.) open on the 24th? We don't want the 24th to be a wasted day, particularly since we know that on the 25th (and possibly the 26th) all or most sites will be closed. We figure we'll use the 25th and 26th to see fountains, Spanish Steps, Appian Way, etc.
Thanks to all who have given or will give advice!