If installed properly your brick pavers should require minimal if any paver maintenance. It is no different than a concrete patio. The various products available, such as the high end polymeric sand, modified mortars used for edging and sealers have made it possible for patio and driveways to become more durable and longer lasting.
Depending on the conditions this can take between 2-6 hours to dry. On hot dry days you can walk on it right away. It can take just over an hour to completely dry and remove any changes of tracking foot prints into it. However on a humid moist day it can take you the better part of a day to completely dry.
This answer depends mostly on the materials you use to seal your patio with. A water based sealer will require sealing sooner than a patio sealed with a solvent base sealer. With a water based sealer you may need to seal every 2 years. A well applied solvent based sealer can go as much as 5 years under ideal conditions.
Sealer come in two forms, water based and solvent based. Each form will have a set of sealer that will achieve a different result such as natural, color enhancers or wet look. A solvent sealer is by far longer lasting but a tad more costly to install.