IMHO, I have to agree with others that there is no way to actually practice with "real" attacks in the dojo. Just not pratcical. Very few tori's could defend and very few uke have the intent to deliver. The closer we can get to the applied situation, the easier it is to generalize and apply the training. Lower belts need to start slow and build up as their ability progress. Higher belts need to be more committed.
Please remember that training is not sparring, sparring is not fighting, fighting is not combat.
There are many other reasons besides the strict martial applications to study Aikido. It is easier to gain martial ability through other arts.
Relax, breath, and enjoy yourself. Now, lets get back on the mat.