obliging
happy panda
barrel of sunshine
happyish
cheery
crack a smile
complaisant
beaming
cheerfully
chirpy
smiler
esteem
admiration
warm-heartedly
ecstatic
in good spirits
in clover
smilingly
cheerily
smile
gladly
lightheartedly
smiley
cheerful
elatedly
happy as a clam
twinkly-eyed
good spirits
upbeatly
grinner
wreathed in smiles
happy as a jaybird
gleeishly
cheeser
like the cat that got the cream
keep one's chin up
smile-smirk
good-humored
overjoyed
good-humoredness
good-humouredness
good-naturedness
good-temperedness
joyously
joyfully
gleefully
good nature
over the rainbow
freewheeler
exultating