If it's in
/etc/fstab then it will mount at boot. As only
root has write permissions then you you'll need to modify it so that the user has those permissions. The best way is:
chown -R user /mnt/point
root group has write permission as well and you want another group to have it then you can use:
chown -R user:group /mnt/point
root group doesn't have write access, then you can use
chmod -R 775 /mnt/point
That will give write permission to the group if it's not there and read and execute to everyone else. You can modify the
775 to give whatever permissions you want to everyone else as that will be specified by the third number.
To better cover what you asked in your comment below:
You can add the
user option to
/etc/fstab but that only allows the file system to be mounted by any user. It won't change the permissions on the file system which is why you need
chmod. You can go ahead and add the
user option so that a regular user without
sudo can mount it should it be unmounted.
For practicality, the best option here is
chown as it gives the user the needed permissions instantly. The
chmod command can be used afterwards if the permissions need to be modified for others.