I do, however, request that I be allowed to work part-time.
The sentence should be punctuated: "However, you could say that TUI is innovative." This includes adding a comma after "However" to indicate a pause in the sentence.
No punctuation is needed (other than the period at the end of the sentence). However, this sentence is not optimally structured. Better would be any of the following: What are they doing now in Spain? What are they doing in Spain at the present time? What are they doing in Spain now?
Simple: You are angry that you lost your purple pen, however, you are not worried; you have a stack of them.
No, "BA" is typically used as an acronym and does not require punctuation. However, if it is used as part of a sentence, appropriate punctuation should be included at the end of the sentence.
Joe watered the garden; however, the plants did not grow.
She does, however, have a seizure disorder.
I would punctuate your sentence as follows: "We had, I guess I'll call it 'materials,' delivered to our home." However, it is an awkward sentence as written. You might want to change the structure to something like, "We had what I will loosely refer to as 'materials' delivered to our home."
When an adverb like "however" begins a sentence, it should be followed by a comma to separate it from the main clause that comes after. This helps to clarify the relationship between the introductory adverb and the rest of the sentence.
She does, however, expect you to try your best.
However, now when I pass what is left of this repository of gloom, I often do not look because it reminds me of her.
I enjoy skiing; however, I do not have the opportunity to ski offten.
If there is an exclamation point or question mark within a sentence, the immediately following word is not automatically capitalized. It can be, however, but that would have to depend on the context.