I am inspired by a_d_medievalist to shop for shoes. I am most comfortable in sandals, which will be entirely suitable for Venice, but worry about London and Cornwall. I did see some rather nice Merril sandals today, though - a bit lighter and strappier than the ones I've been wearing, but still with a good sole for walking.
Sigh. I envy those with minions to haul around suitcases carrying many changes of clothing :)