Quest script guide question

or anyone with did such a thing…:

when delivering a quest
by script

from training area to NPC in town near gate(walking)
& back to training area(walking)

do i need to end the script with “execute script”?
do i need to end it … on the exact XY of the training stand?
or is it Ok to have it 3~5steps near it?

cuz its important for the character to get back in the exact stand
to be inside a chinese buff (therapy line)…