Firstly...I love live music.I have nothing against studio recordings,but if I can hear it live,it's far and away my preference.I just love the energy and rawness and sound of a live performance.So seeing a good tribute band is something I totally enjoy.
As an example,I have seen the original Beatlemania on Broadway.I have seen 1964,and Rain.These to me are not just tribute bands,but musical,and personal imitators.When go tho their performances,....they BECOME the Beatles.Not just the music,but the vocal imitation,personality,look,and humor of the originals.From a few rows back,you could swear it IS the Beatles.
There is also the great attention to detail,as far as clothing and equipment,which was a big part of the early live sound of the band.To do this well is difficult,and some may say excessive.Not in my opinion.Some of these bands faithfully reproduce the experience of seeing a band that you're not able to ever see again.....Live.
Then there are bands like the Fab Faux,The BBC band,and Wonderous Stories with Godfrey Townsend,that don't dress the part,and just play the music,close to the original,but not spot on,with some....enbellishments.Also great stuff.
The last band I have to mention is The Brain Damaged Eggmen( I would go see a band like that for the name alone),who shall we say..have their own spin on Beatle music.Sorry I don't have the link,but their vid are on youtube.They are in my opinion,talanted and creative..check them out.
Steve B