Weeks 1 to 2 are admittedly the toughest week's of the course by far because it is a mix of physical, mental and team strain.
But all by necessity in fairness, these are the 2 weeks where the RAF sees if this is right choice for you and if you can hack it when you pass out, you can expect back to back intense Ped sessions, RAF lessons, drill, uniform collection, lectures with the OC and in particular an understanding of how your intake works together and watches each other's back, in particular for day 11.
The fist big inspection is day 11, typically carried out by the Corporals its normally a fair inspection to mainly give you an understanding of how in detail the day 22 and 63 inspections will be and to give you an understanding of how picky you will have to be when checking your own uniform and others, then element of teamwork is absolutely vital in this first 2 weeks and indeed throughout basic training and your overall career.