Sam felt that he could sit like that in endless happiness; but it was not allowed. It was not enough for him to find his master, he had still to try and save him. He kissed Frodo’s forehead. ‘Come! Wake up, Mr. Frodo!’ he said, trying to sound as cheerful as he had when he drew back the curtains at Bag End on a summer’s morning.
This heavily suggests that Sam commonly "drew back the curtains" in Frodo's room back home, to wake him up, in the manner that one would assume that a butler/servant would for a rich person who has them hired to do all sorts of tasks to help them in general.
It does not sound like a pure gardener who is just keeping Frodo's garden trimmed.
This seems to conflict with what I thought I knew about Sam, and even with posts I've read here in the past.
What actually is Sam's relation to Frodo?