No. RID, and iCEU Central, encourage a wide variety of CEU events to give each interpreter a well-rounded professional growth experience every 4-year cycle. There are currently no limits on any specific type of course work or education event types.
Did you know that you can also repeat any project in your next cycle? This is very helpful for medical specializations - like medical terminology or RX Learning for Interpreters. RID acknowledges that you may not retain all your learning after a 4 year cycle, so you can repeat projects to refresh your skills once your new cycle begins.