As of today, we are imposing a single estate topic RP rule to avoid a number of issues which have cropped up. If you are exploring and gaining levels with your Pokemon in more than one estate area, you will have to close one. One character is allowed one topic each. Should you have multiple characters, they can each have a modded estate topic of their own as discussed in the rules.
However, if you are simply meeting with another member's character in the estate areas in order to roleplay together then that is fine and falls under the unlimited group roleplay allowance all members are given.