It is easy to want to show him or her everything and do everything....However, it can be very overwhelming. Therefore, space things out....The dog park one day....exploring the back yard the next, etc.
Adults are more serious, they are not as hyper and rambunctious as pups, however they do love exercise and will thoroughly love to go for walks, runs, play Frisbee and do other activities. Many owners find that this is a perfect breed to bring for trail running.
A mature dog left home alone for the day will be very happy to be brought outside for a brisk walk. He will be very happy to lay and watch television with the family, be brought to the park for picnics and is now able to keep himself occupied with toys and/or chews.
Many will unintentionally take over the sofa, spreading their body across the furniture to relax....However, they are more than happy to share. You will want to make sure to keep all nails trimmed short to prevent any accidental tearing of your chairs, etc.
If a new pup is brought into the mix, they will most often quickly move to establish that they are the alpha dog and this is normal and expected.