In 1998 I went to Thailand and Laos. It was a strange trip, a mixture of the thriving if slightly sleazy urban sprawl of Bangkok, a few days hiking in the jungle and the 'not really ready for tourists' difficulties of Laos. Of course the biggest thing about Thailand is Buddhas. They are everywhere. There are Golden Buddhas, Silver Buddhas, Jade Buddhas and wooden Buddhas. There are big ones, medium ones and tiny ones. There are standing Buddhas, seated Buddhas and reclining Buddhas. Everyone of them if the guides are to be belived has its own unique superlative. It is either the biggest or the most valuable or the heaviest or the oldest. By they time you have seen a few thousand of them (on about day two) you don't care if you never see one again. Fortunately there are plenty of other things to see.
There is no danger of getting bored with the country.