100% recomended to travel in group
Solo riding is a level up after you have done enough group riding.
This year we were 16riders on 16 bikes and we had to travel in 4~3 packs instead of one long bikes serpant.
for group riding always remember to pair up with the rider who is highest matching with your riding style so you both stay as pair/triple some times 4 riders ride togther but above that you have to further divide and travel in packs.. with a leader and a tail gator.
this year me , @angel82, @akber, @kashi.khan stayed in the end to keep every youngster ahead and to keep an eye if any one falls down or gets the bike broken...
so yes its totally recomended... but for your little one its good that you train him in ur supervision..