I think you will find that Menorca will be busy as July is start of summer holidays depending when you travel. However, it is vey much a family orientated island and popular with couples too so I should'nt think you would find it horrendous!

Again, the waterpark will be a popular choice for the holidaymakers to visit. It'll probably be pot luck as to if it is busy or mega busy .... who knows !!!

Menorca is a lovely Island, some lovely beaches to visit and friendly. You'll enjoy am sure