Have basic medicine when traveling.
To bring medicine for a headache, alergy, upset stomach and motion sickness prevention medicine is always a good idea.
Do not overpack.
Less you bring, easier it will be to pack, carry and there will be more space for souvenirs.
Give your children your contact information.
If a kid gets lost, you'd want them to have your full name, phone number, email address and a local address.
If a child can't remember, have them carry a note.
My 30 year old daughter has autism and wears a bracelet with my phone # and her uncles #.
Include nature in your travels.
Cities and culture can be a great experience, but do not forget about the nature, especially when traveling with kids, it's important for them to experience it.
Zoos and children's museums are frequently reasonably priced and a good 1/2 day events. Some kid museums - science museums - can be fun for adults too. For every city we visited, we'd find either a zoo or kids museum to spend a morning or afternoon. Is parents liked it as much as the kids did.
Explain the trip to your children in great detail.
After reviewing trip plans with your kids, they will know what to expect and be more comfortable with whatever is happening around them.
Bring snacks.
Hangry children or even some adults can bring a fun trip to a miserable one in a matter of minutes. Have snacks ready!
And bring twice what you think they might need. You might have a crabby toddler seated nearby whose mom forgot snacks!
Keep your schedule loose and leave room for adjustments. It will create a lot less stress for you and your family, resulting in a lot happier trip.
Prebook everything that you can.
There will be less things to worry about when you eventually get to your destination.
Used to pre-book then got really sick in Vancouver didn't want to miss any of my pre-book excursions so I did them anyways I hugely regret it I now book excursions on the day of except for things like the Alhambra in Spain that sell out give you a lot more flexibility in case you do end up getting sick or just not feeling like doing anything for a day and relaxing at the beach
Pack smart.
Roll clothes and stuff socks and underwear inside shoes. Wear the heaviest clothes on the flight. Pack essentials and buy what you really need at the destination.
Bring plenty of wipes.
It doesn't hurt to have extra wipes for when there is some mess occuring.
Build an "activity bag" for your kids.
Depending on age, it can be anything, from portable consoles and new games to colouring books and other art supplies.
If you are fresh parents, readjust your expectations.
A lot of things will be different with kids, and some of them not for the better.
Yes especially beach vacations with infants and young children. You will be constantly trying to protect them from drowning and burning up. Not relaxing at all. Bring a babysitter if you want to enjoy peaceful beach time.
Plan flight times.
Some flights might have a better price, some fit better into your or your children's sleeping schedule.
Schedule a "downtime".
Usually when travelling, we plan a lot of activities and feel pressured to experience them all. Having a dedicated downtime might increase your trip satisfaction.
This. I went to Paris and London with my art & design dept at uni and we were visiting at least 2 if not 3 galleries a day, then other stuff on top of it. One night the chunk of people I'd been spending time with went off to bar hop in London and I stayed behind in the hotel room in complete silence. Best night of the trip.
Look for places with animals.
Kids love animals and the experience with them might leave a memorable feeling for children.
Accept that things might go wrong.
Travel is an adventure, and adventures rarely go to plan. Be ready for a few bumps and try not to get irritated by them.
Keep track of your kids.
It might seem obvious, but with the rush of adventure, things might slip your mind. Hold your children's hands, have them sit in your line of sight, and consider GPS trackers.
When traveling, bring new books or toys for kids.
Something they haven't seen before can occopy them for a long time.