We spent 9 days at CBR in May & my kids used our inflatable 36 in. tubes from Target every day in the main pool. On our arrival day, before I had DH blow them up, I asked the lifeguards if they were allowed & one looked at me like I was crazy for even asking & replied, "Sure". So my answer is, "Yes, they are allowed". I've even got the pictures to prove it. (Maybe the rules have changed in the last 4 months, but I doubt it).