Sorry I miss read your question the first time. As far as what to ask or dare we do have a little system (yes, we love Truth or Dare) 99% of the time people will pick truths the first several rounds before they warm up to dares. Use those truths as opportunities to find out what turns them on.
For instance ask questions about their preferences and fetishes etc etc. Ask them what their main erogenous zones are and what techniques and positions they like best. Then once they start picking dares, use that as an opportunity to employ those techniques to their erogenous zones.
We have rarely had a truth or dare game last more than 20 minutes or so before everyone says to heck with the game lets just get it on
