hey hey fran
you have lots to think about and reserving places for your gang. where are you arriving to, how many days in each place, where is your next stop and what is the budget, will you be renting a car or train travel. renting a car you and all drivers will need an IDP (aaa.com/idp) which is mandatory in italy. don't get caught without one, penality fee of $400+ and may take car away from you, plus check size that will fit all and luggage, make sure parking available or costs are high to park away from place.
forget what happened in the 1990"s so many changes, many travelers all year long, no off season anymore. look for a family friendly place, an apartment will be better for your gang. don't wanna sound negative but do be prepared. it's part of planning which can be stressful but rewarding when you converse with your gang and have it all sorted out
booking.com. trivago.com, trip advisor.com are places to check. check how many room. bathrooms, beds, sofa beds are very small and feet may hang over edge, check the amount of people allowed (it's a fire issue and law) A/C, stairs/steps to carry luggage up, do you need an elevator/lift, cancellation policies, do they have a washer/dryer, pack light, will grandchildren carry their own bags, check-in is 3-4pm check-out 10-11am. lots to think about. always check arrival and departure times for trains/ buses/planes so no ungodly hours to wake up and get out
make a list of what you want to see/do/ so so if i miss it and no go. keep asking questions and forum posters will give you good bad and ugly. comprise with what the kids will lake/do and not seeing every church, museum, monuments they will probably get bored after 5-10 minutes. take them to gelato shops tasting many flavors, eating pizza everywhere for them, pack a picnic and go to a park to let them enjoy and run around to tire them out. find kid friendly things to do. hope all works
pre-book activities/attractions early, many are date/time stamp. hope all works out, have fen
YIPPEE GO NINERS
aloha