Carcassonne Bazaars and other expansions after the bid
In the rules for Bridges, Castles and Bazaars you can find the following text:


  Once all tiles have been claimed, the players will each place their tile (and a follower, if they
  wish) in clockwise order from the player to the left of the active player. No follower may be
  placed on the bazaar itself.


Later on it's said that there can be no chain reactions, that there can be only one bazaar round in one turn.

However, in the Dutch rules it says (translated):


  After all land tiles have been claimed, all players execute a normal turn where, instead of drawing a land tile, they place the recently acquired land tile in clockwise order from the player to the left of the active player.


This means something else entirely. By the English rules I would assume everything happens within the same turn. By the Dutch rules, suddenly you have many different turns triggered by the Bazaar.

I checked the German rules as well, they seem to be in line with the English rules. So I'm going with those.

The rules say you can place the tile you acquired, and a follower if you wish. Followers do not include builders, pigs and the like, so strictly I don't think you should be allowed to place those. Also, building onto a road or city that has the builder on it only gives you another turn if you are the active player:


  In a yet later turn, he places a tile that extends or completes the road with his builder on it.
  After completing his turn (placing a follower and scoring), he draws and places a 2nd tile as
  normal, including a follower if he wants.


I'm not sure about the Wheel of Fortune, haven't played it.