our son used a pack n play for the first year. then at 13-14months we moved him to a mattress on the floor. it was a bit early i guess by most standards, but he was throwing his blanket out of the "crib" so we moved him. we had him watch us pack it up, and say bye to it, and then made him up a fun mattress on the floor.
he was SO excited. he would jump on it and say "BIIII BAAA" (Big Bed). and he wanted to show it to everyone who visited.
it was only a dew times that he got out of the bed and came to the door. and we just sent him right back to bed. we out a gate in front of his door so that if he tried to come out in the morning he couldn't, and we left books for him to read.
good luck. and have fun! it can be really fun to get to cuddle on a big bed together for book time and family hugs :)