Don't get me wrong, I'm not against celebrating the Lords supper every week! I'm just saying its not required!
I'm also glad you brought up Baptism! Some non-denominational are very dead set that total submersion is the only way.
I dedicated two weeks just studying Baptism. Baptism is uniting oneself with Jesus Christ in his birth, death and resurrection! There in nowhere in the Bible that states instructions on how to do it. If Churches which to copy John the Baptist then they should also wear clothing made of camel hear, leather belt, eat locusts and raw honey while doing Baptizms.
Which leads me to this question. What do you think John the Baptist would have done had he been walking across the desert with only a wine skin of water and someone asked him to Baptize them? I don't think he would have turned them down.
My conclusion on Baptism is, that there is no rule on age or how it is preformed. One may also decide to be re-Baptized as an adult. Baptism is not required to get to heaven ether! Example, one of the men crucified with Christ asked that he be remembered, and Jesus said "I promise you today you will be in Paradise with me." Luke 23:43
My guess would be that the man had not been Baptized.
Bob