I often play the Zenith Daylong Reward event on the BBO. It is a robot event with robots sitting in three axes while the human participant plays as South. There are 16 deals. There is 1BB$ entry free that effectively keeps away many casual players. Eighty percent (80%) of the collected entry fee is given away in prizes of BB$ so there is something to play for however small that reward may be. You also get some BBO points for finishing in the leaders' list. It takes me about 30 minutes to finish the set in one go.
Bridge Tournaments (Worldwide and online)