Found online:
"By train, by plane, or motor yacht,
for fun and games we've found the best spot!
It's Omair's first birthday party, so don't be late.
"All aboard! Let's Celebrate!"
"All Aboard for Omair's birthday
Please meet at track (child's age)
On (day, date)
Party train departs at (start time) and returns to the station at (end time)
Lunch will be served in the dining car.
Come dressed to have fun!
Please respond to Station Master Miranda at (phone number)"
"All aboard!
Patry time - Train boards at:
Party finish - Returning at:
Where is the party - Smith station (use your surname)
RSVP to: The Station master Miranda"
These are just a few- I googled "train themed invitation wording" and found super cute stuff. I love Google