Humberto Carreno/Startraks
After a busy day
playing at the park and eating cupcakes on Saturday,
Tom Cruise and Co. took it easy on Sunday with a trip to Starbucks and a lesuirely walk back to their Boston hotel.
While
Katie Holmes enjoyed a caffeine pick-me-up,
Suri, 3, went with a hot chocolate.
An onlooker
tells PEOPLE: "[Suri] treated her warm drink like it was a treasure, and she enjoyed small sips."
Heading back to the